99028880 has 80 divisors (see below), whose sum is σ = 241365504. Its totient is φ = 37739520.

The previous prime is 99028873. The next prime is 99028903. The reversal of 99028880 is 8882099.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180767 + ... + 181313.

Almost surely, 2^99028880 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 99028880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120682752).

99028880 is an abundant number, since it is smaller than the sum of its proper divisors (142336624).

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

99028880 is a wasteful number, since it uses less digits than its factorization.

99028880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 658 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 99028880 is about 9951.3255398464. The cubic root of 99028880 is about 462.6514799649.

The spelling of 99028880 in words is "ninety-nine million, twenty-eight thousand, eight hundred eighty".