257370812 has 12 divisors (see below), whose sum is σ = 450930480. Its totient is φ = 128533536.

The previous prime is 257370787. The next prime is 257370821. The reversal of 257370812 is 218073752.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34112 + ... + 40967.

It is an arithmetic number, because the mean of its divisors is an integer number (37577540).

Almost surely, 2^257370812 is an apocalyptic number.

It is an amenable number.

257370812 is a deficient number, since it is larger than the sum of its proper divisors (193559668).

257370812 is a wasteful number, since it uses less digits than its factorization.

257370812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75940 (or 75938 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 257370812 is about 16042.7806816649. The cubic root of 257370812 is about 636.0917519884.

The spelling of 257370812 in words is "two hundred fifty-seven million, three hundred seventy thousand, eight hundred twelve".