255993892 has 48 divisors (see below), whose sum is σ = 563230080. Its totient is φ = 99723360.

The previous prime is 255993889. The next prime is 255993901. The reversal of 255993892 is 298399552.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33834 + ... + 40702.

It is an arithmetic number, because the mean of its divisors is an integer number (11733960).

Almost surely, 2^255993892 is an apocalyptic number.

255993892 is a gapful number since it is divisible by the number (22) 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 255993892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281615040).

255993892 is an abundant number, since it is smaller than the sum of its proper divisors (307236188).

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

255993892 is a wasteful number, since it uses less digits than its factorization.

255993892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6913 (or 6889 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 52.

The square root of 255993892 is about 15999.8091238614. The cubic root of 255993892 is about 634.9553708275.

The spelling of 255993892 in words is "two hundred fifty-five million, nine hundred ninety-three thousand, eight hundred ninety-two".