90690032 has 20 divisors (see below), whose sum is σ = 179998896. Its totient is φ = 44238720.

The previous prime is 90690029. The next prime is 90690079. The reversal of 90690032 is 23009609.

It is a super-2 number, since 2×90690032² = 16449363808322048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90689977 and 90690004.

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, 68468 + ... + 69779.

Almost surely, 2^90690032 is an apocalyptic number.

It is an amenable number.

90690032 is a deficient number, since it is larger than the sum of its proper divisors (89308864).

90690032 is a wasteful number, since it uses less digits than its factorization.

90690032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138296 (or 138290 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 90690032 is about 9523.1314177638. The cubic root of 90690032 is about 449.2828610364.

The spelling of 90690032 in words is "ninety million, six hundred ninety thousand, thirty-two".