90931032 has 32 divisors (see below), whose sum is σ = 252586800. Its totient is φ = 30310272.

The previous prime is 90931021. The next prime is 90931039. The reversal of 90931032 is 23013909.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 90930987 and 90931005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90931039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210273 + ... + 210704.

Almost surely, 2^90931032 is an apocalyptic number.

It is an amenable number.

90931032 is an abundant number, since it is smaller than the sum of its proper divisors (161655768).

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

90931032 is a wasteful number, since it uses less digits than its factorization.

90931032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420992 (or 420982 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 90931032 is about 9535.7764235536. The cubic root of 90931032 is about 449.6804842975.

The spelling of 90931032 in words is "ninety million, nine hundred thirty-one thousand, thirty-two".