257465768 has 32 divisors (see below), whose sum is σ = 564548160. Its totient is φ = 107775360.

The previous prime is 257465753. The next prime is 257465771. The reversal of 257465768 is 867564752.

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, 51053 + ... + 55868.

It is an arithmetic number, because the mean of its divisors is an integer number (17642130).

Almost surely, 2^257465768 is an apocalyptic number.

257465768 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

257465768 is an abundant number, since it is smaller than the sum of its proper divisors (307082392).

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

257465768 is a wasteful number, since it uses less digits than its factorization.

257465768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106977 (or 106973 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 50.

The square root of 257465768 is about 16045.7398707570. The cubic root of 257465768 is about 636.1699702619.

The spelling of 257465768 in words is "two hundred fifty-seven million, four hundred sixty-five thousand, seven hundred sixty-eight".