90728576 has 32 divisors (see below), whose sum is σ = 181213200. Its totient is φ = 45247744.

The previous prime is 90728563. The next prime is 90728593. The reversal of 90728576 is 67582709.

It is a tau number, because it is divible by the number of its divisors (32).

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, 71435 + ... + 72693.

Almost surely, 2^90728576 is an apocalyptic number.

It is an amenable number.

90728576 is a deficient number, since it is larger than the sum of its proper divisors (90484624).

90728576 is a wasteful number, since it uses less digits than its factorization.

90728576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836 (or 1824 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 90728576 is about 9525.1549068768. The cubic root of 90728576 is about 449.3465016427.

The spelling of 90728576 in words is "ninety million, seven hundred twenty-eight thousand, five hundred seventy-six".