257927080 has 32 divisors (see below), whose sum is σ = 580825440. Its totient is φ = 103083840.

The previous prime is 257927069. The next prime is 257927081. The reversal of 257927080 is 80729752.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (257927081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68035 + ... + 71725.

It is an arithmetic number, because the mean of its divisors is an integer number (18150795).

Almost surely, 2^257927080 is an apocalyptic number.

257927080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257927080 is an abundant number, since it is smaller than the sum of its proper divisors (322898360).

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

257927080 is a wasteful number, since it uses less digits than its factorization.

257927080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449 (or 5445 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 257927080 is about 16060.1083433456. The cubic root of 257927080 is about 636.5496941919.

The spelling of 257927080 in words is "two hundred fifty-seven million, nine hundred twenty-seven thousand, eighty".