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143880 = 233511109
BaseRepresentation
bin100011001000001000
321022100220
4203020020
514101010
63030040
71136322
oct431010
9238326
10143880
1199110
126b320
1350649
143a612
152c970
hex23208

143880 has 64 divisors (see below), whose sum is σ = 475200. Its totient is φ = 34560.

The previous prime is 143879. The next prime is 143881. The reversal of 143880 is 88341.

Added to its reverse (88341) it gives a triangular number (232221 = T681).

It is an interprime number because it is at equal distance from previous prime (143879) and next prime (143881).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 143880.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1266 + ... + 1374.

It is an arithmetic number, because the mean of its divisors is an integer number (7425).

2143880 is an apocalyptic number.

143880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237600).

143880 is an abundant number, since it is smaller than the sum of its proper divisors (331320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143880 is a wasteful number, since it uses less digits than its factorization.

143880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 143880 is about 379.3151723831. The cubic root of 143880 is about 52.4002641635.

143880 divided by its sum of digits (24) gives a palindrome (5995).

Adding to 143880 its reverse (88341), we get a triangular number (232221 = T681).

The spelling of 143880 in words is "one hundred forty-three thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 11 12 15 20 22 24 30 33 40 44 55 60 66 88 109 110 120 132 165 218 220 264 327 330 436 440 545 654 660 872 1090 1199 1308 1320 1635 2180 2398 2616 3270 3597 4360 4796 5995 6540 7194 9592 11990 13080 14388 17985 23980 28776 35970 47960 71940 143880