90732816 has 60 divisors (see below), whose sum is σ = 254567040. Its totient is φ = 30168000.

The previous prime is 90732797. The next prime is 90732821. The reversal of 90732816 is 61823709.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107725 + ... + 108563.

It is an arithmetic number, because the mean of its divisors is an integer number (4242784).

Almost surely, 2^90732816 is an apocalyptic number.

It is an amenable number.

90732816 is an abundant number, since it is smaller than the sum of its proper divisors (163834224).

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

90732816 is a wasteful number, since it uses less digits than its factorization.

90732816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604 (or 1595 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 90732816 is about 9525.3774728354. The cubic root of 90732816 is about 449.3535012731.

The spelling of 90732816 in words is "ninety million, seven hundred thirty-two thousand, eight hundred sixteen".