99031872 has 56 divisors (see below), whose sum is σ = 265379200. Its totient is φ = 32587776.

The previous prime is 99031871. The next prime is 99031879. The reversal of 99031872 is 27813099.

It is a self number, because there is not a number n which added to its sum of digits gives 99031872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99031871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11904 + ... + 18432.

Almost surely, 2^99031872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99031872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132689600).

99031872 is an abundant number, since it is smaller than the sum of its proper divisors (166347328).

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

99031872 is a wasteful number, since it uses less digits than its factorization.

99031872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6623 (or 6613 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 99031872 is about 9951.4758704425. The cubic root of 99031872 is about 462.6561393440.

The spelling of 99031872 in words is "ninety-nine million, thirty-one thousand, eight hundred seventy-two".