90475928 has 24 divisors (see below), whose sum is σ = 177347100. Its totient is φ = 43269072.

The previous prime is 90475919. The next prime is 90475933. The reversal of 90475928 is 82957409.

It is a happy number.

It is a super-2 number, since 2×90475928² = 16371787094922368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6458 + ... + 14921.

Almost surely, 2^90475928 is an apocalyptic number.

It is an amenable number.

90475928 is a deficient number, since it is larger than the sum of its proper divisors (86871172).

90475928 is a wasteful number, since it uses less digits than its factorization.

90475928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21431 (or 21404 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 90475928 is about 9511.8835148460. The cubic root of 90475928 is about 448.9290218704.

The spelling of 90475928 in words is "ninety million, four hundred seventy-five thousand, nine hundred twenty-eight".