99521928 has 48 divisors (see below), whose sum is σ = 294044400. Its totient is φ = 30157920.

The previous prime is 99521911. The next prime is 99521953. The reversal of 99521928 is 82912599.

It is a super-2 number, since 2×99521928² = 19809228305674368, which contains 22 as substring.

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, 62038 + ... + 63621.

It is an arithmetic number, because the mean of its divisors is an integer number (6125925).

Almost surely, 2^99521928 is an apocalyptic number.

It is an amenable number.

99521928 is an abundant number, since it is smaller than the sum of its proper divisors (194522472).

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

99521928 is a wasteful number, since it uses less digits than its factorization.

99521928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125682 (or 125675 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 99521928 is about 9976.0677624002. The cubic root of 99521928 is about 463.4180302814.

The spelling of 99521928 in words is "ninety-nine million, five hundred twenty-one thousand, nine hundred twenty-eight".