257282816 has 36 divisors (see below), whose sum is σ = 586930512. Its totient is φ = 110263296.

The previous prime is 257282813. The next prime is 257282827. The reversal of 257282816 is 618282752.

It is not an unprimeable number, because it can be changed into a prime (257282813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69995 + ... + 73578.

Almost surely, 2^257282816 is an apocalyptic number.

It is an amenable number.

257282816 is an abundant number, since it is smaller than the sum of its proper divisors (329647696).

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

257282816 is an equidigital number, since it uses as much as digits as its factorization.

257282816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143596 (or 143582 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 257282816 is about 16040.0379051921. The cubic root of 257282816 is about 636.0192497107.

The spelling of 257282816 in words is "two hundred fifty-seven million, two hundred eighty-two thousand, eight hundred sixteen".