257919426 has 12 divisors (see below), whose sum is σ = 558825462. Its totient is φ = 85973136.

The previous prime is 257919413. The next prime is 257919457. The reversal of 257919426 is 624919752.

It can be written as a sum of positive squares in only one way, i.e., 135839025 + 122080401 = 11655^2 + 11049^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7164411 + ... + 7164446.

Almost surely, 2^257919426 is an apocalyptic number.

257919426 is an abundant number, since it is smaller than the sum of its proper divisors (300906036).

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

257919426 is a wasteful number, since it uses less digits than its factorization.

257919426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14328865 (or 14328862 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 257919426 is about 16059.8700492874. The cubic root of 257919426 is about 636.5433975808.

The spelling of 257919426 in words is "two hundred fifty-seven million, nine hundred nineteen thousand, four hundred twenty-six".