99528720 has 40 divisors (see below), whose sum is σ = 308539776. Its totient is φ = 26540928.

The previous prime is 99528697. The next prime is 99528731. The reversal of 99528720 is 2782599.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×99528720³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207112 + ... + 207591.

Almost surely, 2^99528720 is an apocalyptic number.

It is an amenable number.

99528720 is an abundant number, since it is smaller than the sum of its proper divisors (209011056).

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

99528720 is a wasteful number, since it uses less digits than its factorization.

99528720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414719 (or 414713 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 99528720 is about 9976.4081712809. The cubic root of 99528720 is about 463.4285722250.

The spelling of 99528720 in words is "ninety-nine million, five hundred twenty-eight thousand, seven hundred twenty".