257321274 has 16 divisors (see below), whose sum is σ = 588163008. Its totient is φ = 73520352.

The previous prime is 257321257. The next prime is 257321279. The reversal of 257321274 is 472123752.

It is not an unprimeable number, because it can be changed into a prime (257321279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3063307 + ... + 3063390.

It is an arithmetic number, because the mean of its divisors is an integer number (36760188).

Almost surely, 2^257321274 is an apocalyptic number.

257321274 is an abundant number, since it is smaller than the sum of its proper divisors (330841734).

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

257321274 is a wasteful number, since it uses less digits than its factorization.

257321274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6126709.

The product of its digits is 23520, while the sum is 33.

The square root of 257321274 is about 16041.2366730249. The cubic root of 257321274 is about 636.0509383275.

The spelling of 257321274 in words is "two hundred fifty-seven million, three hundred twenty-one thousand, two hundred seventy-four".