257009716 has 24 divisors (see below), whose sum is σ = 480291840. Its totient is φ = 120069600.

The previous prime is 257009707. The next prime is 257009719. The reversal of 257009716 is 617900752.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257009719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32140 + ... + 39331.

It is an arithmetic number, because the mean of its divisors is an integer number (20012160).

Almost surely, 2^257009716 is an apocalyptic number.

It is an amenable number.

257009716 is a deficient number, since it is larger than the sum of its proper divisors (223282124).

257009716 is a wasteful number, since it uses less digits than its factorization.

257009716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71535 (or 71533 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 257009716 is about 16031.5225727315. The cubic root of 257009716 is about 635.7941299320.

The spelling of 257009716 in words is "two hundred fifty-seven million, nine thousand, seven hundred sixteen".