257083390 has 16 divisors (see below), whose sum is σ = 471482208. Its totient is φ = 100892896.

The previous prime is 257083381. The next prime is 257083417. The reversal of 257083390 is 93380752.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242002 + ... + 243061.

It is an arithmetic number, because the mean of its divisors is an integer number (29467638).

Almost surely, 2^257083390 is an apocalyptic number.

257083390 is a deficient number, since it is larger than the sum of its proper divisors (214398818).

257083390 is a wasteful number, since it uses less digits than its factorization.

257083390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485123.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 257083390 is about 16033.8201935783. The cubic root of 257083390 is about 635.8548760422.

The spelling of 257083390 in words is "two hundred fifty-seven million, eighty-three thousand, three hundred ninety".