998935728 has 40 divisors (see below), whose sum is σ = 2949239808. Its totient is φ = 285410112.

The previous prime is 998935687. The next prime is 998935757. The reversal of 998935728 is 827539899.

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, 1486176 + ... + 1486847.

Almost surely, 2^998935728 is an apocalyptic number.

It is an amenable number.

998935728 is an abundant number, since it is smaller than the sum of its proper divisors (1950304080).

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

998935728 is a wasteful number, since it uses less digits than its factorization.

998935728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2973041 (or 2973035 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 60.

The square root of 998935728 is about 31605.9445041593. The cubic root of 998935728 is about 999.6451167394.

The spelling of 998935728 in words is "nine hundred ninety-eight million, nine hundred thirty-five thousand, seven hundred twenty-eight".