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189200 = 24521143
BaseRepresentation
bin101110001100010000
3100121112102
4232030100
522023300
64015532
71415414
oct561420
9317472
10189200
1111a170
12915a8
136816b
144cd44
153b0d5
hex2e310

189200 has 60 divisors (see below), whose sum is σ = 507408. Its totient is φ = 67200.

The previous prime is 189199. The next prime is 189223. The reversal of 189200 is 2981.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4379 + ... + 4421.

2189200 is an apocalyptic number.

189200 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 189200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253704).

189200 is an abundant number, since it is smaller than the sum of its proper divisors (318208).

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

189200 is a wasteful number, since it uses less digits than its factorization.

189200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 189200 is about 434.9712634186. The cubic root of 189200 is about 57.4081710051.

It can be divided in two parts, 18 and 9200, that multiplied together give a triangular number (165600 = T575).

The spelling of 189200 in words is "one hundred eighty-nine thousand, two hundred".

Divisors: 1 2 4 5 8 10 11 16 20 22 25 40 43 44 50 55 80 86 88 100 110 172 176 200 215 220 275 344 400 430 440 473 550 688 860 880 946 1075 1100 1720 1892 2150 2200 2365 3440 3784 4300 4400 4730 7568 8600 9460 11825 17200 18920 23650 37840 47300 94600 189200