99980028 has 24 divisors (see below), whose sum is σ = 259207760. Its totient is φ = 33326640.

The previous prime is 99980003. The next prime is 99980047. The reversal of 99980028 is 82008999.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462763 + ... + 462978.

Almost surely, 2^99980028 is an apocalyptic number.

It is an amenable number.

99980028 is an abundant number, since it is smaller than the sum of its proper divisors (159227732).

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

99980028 is a wasteful number, since it uses less digits than its factorization.

99980028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925754 (or 925746 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 99980028 is about 9999.0013501349. The cubic root of 99980028 is about 464.1279806998.

The spelling of 99980028 in words is "ninety-nine million, nine hundred eighty thousand, twenty-eight".