99904028 has 24 divisors (see below), whose sum is σ = 200116224. Its totient is φ = 42750000.

The previous prime is 99903997. The next prime is 99904037. The reversal of 99904028 is 82040999.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 18653 + ... + 23403.

It is an arithmetic number, because the mean of its divisors is an integer number (8338176).

Almost surely, 2^99904028 is an apocalyptic number.

It is an amenable number.

99904028 is an abundant number, since it is smaller than the sum of its proper divisors (100212196).

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

99904028 is a wasteful number, since it uses less digits than its factorization.

99904028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5513 (or 5511 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 99904028 is about 9995.2002481191. The cubic root of 99904028 is about 464.0103483126.

The spelling of 99904028 in words is "ninety-nine million, nine hundred four thousand, twenty-eight".