257440714 has 16 divisors (see below), whose sum is σ = 407980800. Its totient is φ = 121636144.

The previous prime is 257440691. The next prime is 257440721. The reversal of 257440714 is 417044752.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 257440714.

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, 44494 + ... + 49945.

It is an arithmetic number, because the mean of its divisors is an integer number (25498800).

Almost surely, 2^257440714 is an apocalyptic number.

257440714 is a deficient number, since it is larger than the sum of its proper divisors (150540086).

257440714 is a wasteful number, since it uses less digits than its factorization.

257440714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94517.

The product of its (nonzero) digits is 31360, while the sum is 34.

The square root of 257440714 is about 16044.9591460994. The cubic root of 257440714 is about 636.1493343542.

The spelling of 257440714 in words is "two hundred fifty-seven million, four hundred forty thousand, seven hundred fourteen".