987899928 has 16 divisors (see below), whose sum is σ = 2469749880. Its totient is φ = 329299968.

The previous prime is 987899923. The next prime is 987899929. The reversal of 987899928 is 829998789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987899921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20581225 + ... + 20581272.

Almost surely, 2^987899928 is an apocalyptic number.

It is an amenable number.

987899928 is an abundant number, since it is smaller than the sum of its proper divisors (1481849952).

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

987899928 is a wasteful number, since it uses less digits than its factorization.

987899928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41162506 (or 41162502 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 69.

The square root of 987899928 is about 31430.8753934726. The cubic root of 987899928 is about 995.9502644477.

The spelling of 987899928 in words is "nine hundred eighty-seven million, eight hundred ninety-nine thousand, nine hundred twenty-eight".