257330432 has 36 divisors (see below), whose sum is σ = 526205316. Its totient is φ = 125521920.

The previous prime is 257330429. The next prime is 257330441. The reversal of 257330432 is 234033752.

It can be written as a sum of positive squares in 2 ways, for example, as 30647296 + 226683136 = 5536^2 + 15056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 257330395 and 257330404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1763 + ... + 22754.

Almost surely, 2^257330432 is an apocalyptic number.

It is an amenable number.

257330432 is an abundant number, since it is smaller than the sum of its proper divisors (268874884).

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

257330432 is an equidigital number, since it uses as much as digits as its factorization.

257330432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24574 (or 24560 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 29.

The square root of 257330432 is about 16041.5221222925. The cubic root of 257330432 is about 636.0584838694.

The spelling of 257330432 in words is "two hundred fifty-seven million, three hundred thirty thousand, four hundred thirty-two".