99390528 has 42 divisors (see below), whose sum is σ = 284886654. Its totient is φ = 33129984.

The previous prime is 99390527. The next prime is 99390553. The reversal of 99390528 is 82509399.

99390528 is a `hidden beast` number, since 99 + 39 + 0 + 528 = 666.

It can be written as a sum of positive squares in only one way, i.e., 97772544 + 1617984 = 9888^2 + 1272^2 .

It is a super-2 number, since 2×99390528² = 19756954112237568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99390527) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 85701 + ... + 86852.

Almost surely, 2^99390528 is an apocalyptic number.

It is an amenable number.

99390528 is an abundant number, since it is smaller than the sum of its proper divisors (185496126).

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

99390528 is a wasteful number, since it uses less digits than its factorization.

99390528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172571 (or 172558 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 99390528 is about 9969.4798259488. The cubic root of 99390528 is about 463.2139883200.

The spelling of 99390528 in words is "ninety-nine million, three hundred ninety thousand, five hundred twenty-eight".