90730032 has 40 divisors (see below), whose sum is σ = 244579584. Its totient is φ = 28928064.

The previous prime is 90730027. The next prime is 90730049. The reversal of 90730032 is 23003709.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 90729984 and 90730011.

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, 39988 + ... + 42195.

Almost surely, 2^90730032 is an apocalyptic number.

90730032 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

90730032 is an abundant number, since it is smaller than the sum of its proper divisors (153849552).

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

90730032 is a wasteful number, since it uses less digits than its factorization.

90730032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82217 (or 82211 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 24.

The square root of 90730032 is about 9525.2313357734. The cubic root of 90730032 is about 449.3489053139.

The spelling of 90730032 in words is "ninety million, seven hundred thirty thousand, thirty-two".