257796628 has 12 divisors (see below), whose sum is σ = 454390720. Its totient is φ = 127970712.

The previous prime is 257796613. The next prime is 257796629. The reversal of 257796628 is 826697752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257796629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231276 + ... + 232387.

Almost surely, 2^257796628 is an apocalyptic number.

It is an amenable number.

257796628 is a deficient number, since it is larger than the sum of its proper divisors (196594092).

257796628 is a wasteful number, since it uses less digits than its factorization.

257796628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463806 (or 463804 counting only the distinct ones).

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

The square root of 257796628 is about 16056.0464623144. The cubic root of 257796628 is about 636.4423599998.

The spelling of 257796628 in words is "two hundred fifty-seven million, seven hundred ninety-six thousand, six hundred twenty-eight".