257430474 has 40 divisors (see below), whose sum is σ = 659242848. Its totient is φ = 73551240.

The previous prime is 257430469. The next prime is 257430491. The reversal of 257430474 is 474034752.

257430474 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 112372 + ... + 114639.

Almost surely, 2^257430474 is an apocalyptic number.

257430474 is an abundant number, since it is smaller than the sum of its proper divisors (401812374).

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

257430474 is a wasteful number, since it uses less digits than its factorization.

257430474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227032 (or 227023 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 36.

The square root of 257430474 is about 16044.6400395895. The cubic root of 257430474 is about 636.1408997190.

The spelling of 257430474 in words is "two hundred fifty-seven million, four hundred thirty thousand, four hundred seventy-four".