90831256 has 16 divisors (see below), whose sum is σ = 170438400. Its totient is φ = 45381024.

The previous prime is 90831193. The next prime is 90831269. The reversal of 90831256 is 65213809.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9385 + ... + 16423.

It is an arithmetic number, because the mean of its divisors is an integer number (10652400).

Almost surely, 2^90831256 is an apocalyptic number.

It is an amenable number.

90831256 is a deficient number, since it is larger than the sum of its proper divisors (79607144).

90831256 is a wasteful number, since it uses less digits than its factorization.

90831256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8658 (or 8654 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 90831256 is about 9530.5433213432. The cubic root of 90831256 is about 449.5159502928.

The spelling of 90831256 in words is "ninety million, eight hundred thirty-one thousand, two hundred fifty-six".