99512728 has 96 divisors (see below), whose sum is σ = 236390400. Its totient is φ = 39009600.

The previous prime is 99512711. The next prime is 99512731. The reversal of 99512728 is 82721599.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 230673 + ... + 231103.

It is an arithmetic number, because the mean of its divisors is an integer number (2462400).

Almost surely, 2^99512728 is an apocalyptic number.

99512728 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99512728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118195200).

99512728 is an abundant number, since it is smaller than the sum of its proper divisors (136877672).

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

99512728 is a wasteful number, since it uses less digits than its factorization.

99512728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501 (or 490 counting only the distinct ones).

The product of its digits is 90720, while the sum is 43.

The square root of 99512728 is about 9975.6066482194. The cubic root of 99512728 is about 463.4037500875.

The spelling of 99512728 in words is "ninety-nine million, five hundred twelve thousand, seven hundred twenty-eight".