255772940 has 24 divisors (see below), whose sum is σ = 554451072. Its totient is φ = 99008640.

The previous prime is 255772879. The next prime is 255772981. The reversal of 255772940 is 49277552.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205649 + ... + 206888.

It is an arithmetic number, because the mean of its divisors is an integer number (23102128).

Almost surely, 2^255772940 is an apocalyptic number.

255772940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255772940 is an abundant number, since it is smaller than the sum of its proper divisors (298678132).

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

255772940 is a wasteful number, since it uses less digits than its factorization.

255772940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412577 (or 412575 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 255772940 is about 15992.9028009302. The cubic root of 255772940 is about 634.7726385485.

The spelling of 255772940 in words is "two hundred fifty-five million, seven hundred seventy-two thousand, nine hundred forty".