257493370 has 16 divisors (see below), whose sum is σ = 465339168. Its totient is φ = 102586000.

The previous prime is 257493367. The next prime is 257493391. The reversal of 257493370 is 73394752.

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, 48784 + ... + 53803.

It is an arithmetic number, because the mean of its divisors is an integer number (29083698).

Almost surely, 2^257493370 is an apocalyptic number.

257493370 is a deficient number, since it is larger than the sum of its proper divisors (207845798).

257493370 is a wasteful number, since it uses less digits than its factorization.

257493370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102845.

The product of its (nonzero) digits is 158760, while the sum is 40.

The square root of 257493370 is about 16046.5999513916. The cubic root of 257493370 is about 636.1927032983.

The spelling of 257493370 in words is "two hundred fifty-seven million, four hundred ninety-three thousand, three hundred seventy".