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128952 = 2334199
BaseRepresentation
bin11111011110111000
320112220000
4133132320
513111302
62433000
71044645
oct373670
9215800
10128952
118897a
1262760
1346905
1434dcc
152831c
hex1f7b8

128952 has 40 divisors (see below), whose sum is σ = 363000. Its totient is φ = 42768.

The previous prime is 128951. The next prime is 128959. The reversal of 128952 is 259821.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128951) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 549 + ... + 747.

It is an arithmetic number, because the mean of its divisors is an integer number (9075).

2128952 is an apocalyptic number.

128952 is a gapful number since it is divisible by the number (12) 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 128952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181500).

128952 is an abundant number, since it is smaller than the sum of its proper divisors (234048).

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

128952 is a wasteful number, since it uses less digits than its factorization.

128952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 204 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 128952 is about 359.0988721787. The cubic root of 128952 is about 50.5214756877.

The spelling of 128952 in words is "one hundred twenty-eight thousand, nine hundred fifty-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 81 108 162 199 216 324 398 597 648 796 1194 1592 1791 2388 3582 4776 5373 7164 10746 14328 16119 21492 32238 42984 64476 128952