257676928 has 16 divisors (see below), whose sum is σ = 513341010. Its totient is φ = 128838400.

The previous prime is 257676899. The next prime is 257676943. The reversal of 257676928 is 829676752.

It can be written as a sum of positive squares in only one way, i.e., 256256064 + 1420864 = 16008^2 + 1192^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006423 + ... + 1006678.

Almost surely, 2^257676928 is an apocalyptic number.

It is an amenable number.

257676928 is a deficient number, since it is larger than the sum of its proper divisors (255664082).

257676928 is an equidigital number, since it uses as much as digits as its factorization.

257676928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013115 (or 2013103 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 52.

The square root of 257676928 is about 16052.3184618297. The cubic root of 257676928 is about 636.3438405518.

The spelling of 257676928 in words is "two hundred fifty-seven million, six hundred seventy-six thousand, nine hundred twenty-eight".