90728700 has 36 divisors (see below), whose sum is σ = 262509240. Its totient is φ = 24194240.

The previous prime is 90728681. The next prime is 90728731. The reversal of 90728700 is 782709.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150915 + ... + 151514.

Almost surely, 2^90728700 is an apocalyptic number.

It is an amenable number.

90728700 is an abundant number, since it is smaller than the sum of its proper divisors (171780540).

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

90728700 is a wasteful number, since it uses less digits than its factorization.

90728700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302446 (or 302439 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 90728700 is about 9525.1614159551. The cubic root of 90728700 is about 449.3467063520.

The spelling of 90728700 in words is "ninety million, seven hundred twenty-eight thousand, seven hundred".