257063628 has 24 divisors (see below), whose sum is σ = 601543600. Its totient is φ = 85440960.

The previous prime is 257063603. The next prime is 257063659. The reversal of 257063628 is 826360752.

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, 26503 + ... + 34878.

Almost surely, 2^257063628 is an apocalyptic number.

It is an amenable number.

257063628 is an abundant number, since it is smaller than the sum of its proper divisors (344479972).

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

257063628 is a wasteful number, since it uses less digits than its factorization.

257063628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61737 (or 61735 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 257063628 is about 16033.2039218617. The cubic root of 257063628 is about 635.8385829035.

The spelling of 257063628 in words is "two hundred fifty-seven million, sixty-three thousand, six hundred twenty-eight".