90643132 has 12 divisors (see below), whose sum is σ = 163742656. Its totient is φ = 43859520.

The previous prime is 90643123. The next prime is 90643141. The reversal of 90643132 is 23134609.

It is an interprime number because it is at equal distance from previous prime (90643123) and next prime (90643141).

It is a self number, because there is not a number n which added to its sum of digits gives 90643132.

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, 365373 + ... + 365620.

Almost surely, 2^90643132 is an apocalyptic number.

It is an amenable number.

90643132 is a deficient number, since it is larger than the sum of its proper divisors (73099524).

90643132 is a wasteful number, since it uses less digits than its factorization.

90643132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731028 (or 731026 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 90643132 is about 9520.6686739955. The cubic root of 90643132 is about 449.2053993827.

The spelling of 90643132 in words is "ninety million, six hundred forty-three thousand, one hundred thirty-two".