255851928 has 96 divisors (see below), whose sum is σ = 724838400. Its totient is φ = 81432000.

The previous prime is 255851903. The next prime is 255851951. The reversal of 255851928 is 829158552.

It is a happy number.

255851928 is a `hidden beast` number, since 2 + 558 + 5 + 1 + 92 + 8 = 666.

It is a super-2 number, since 2×255851928² = 130920418122634368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175603 + ... + 177053.

It is an arithmetic number, because the mean of its divisors is an integer number (7550400).

Almost surely, 2^255851928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255851928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362419200).

255851928 is an abundant number, since it is smaller than the sum of its proper divisors (468986472).

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

255851928 is a wasteful number, since it uses less digits than its factorization.

255851928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573 (or 1566 counting only the distinct ones).

The product of its digits is 288000, while the sum is 45.

The square root of 255851928 is about 15995.3720806988. The cubic root of 255851928 is about 634.8379754846.

The spelling of 255851928 in words is "two hundred fifty-five million, eight hundred fifty-one thousand, nine hundred twenty-eight".