90931372 has 24 divisors (see below), whose sum is σ = 182690816. Its totient is φ = 38793168.

The previous prime is 90931367. The next prime is 90931381. The reversal of 90931372 is 27313909.

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, 1038 + ... + 13525.

Almost surely, 2^90931372 is an apocalyptic number.

It is an amenable number.

90931372 is an abundant number, since it is smaller than the sum of its proper divisors (91759444).

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

90931372 is a wasteful number, since it uses less digits than its factorization.

90931372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14797 (or 14795 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 90931372 is about 9535.7942511361. The cubic root of 90931372 is about 449.6810447632.

The spelling of 90931372 in words is "ninety million, nine hundred thirty-one thousand, three hundred seventy-two".