998936928 has 96 divisors (see below), whose sum is σ = 3178465920. Its totient is φ = 302705280.

The previous prime is 998936923. The next prime is 998936957. The reversal of 998936928 is 829639899.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×998936928² = 1995749972244154368, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998936923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43050 + ... + 62057.

It is an arithmetic number, because the mean of its divisors is an integer number (33109020).

Almost surely, 2^998936928 is an apocalyptic number.

It is an amenable number.

998936928 is an abundant number, since it is smaller than the sum of its proper divisors (2179528992).

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

998936928 is a wasteful number, since it uses less digits than its factorization.

998936928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105137 (or 105123 counting only the distinct ones).

The product of its digits is 15116544, while the sum is 63.

The square root of 998936928 is about 31605.9634879242. The cubic root of 998936928 is about 999.6455170233.

The spelling of 998936928 in words is "nine hundred ninety-eight million, nine hundred thirty-six thousand, nine hundred twenty-eight".