9720988 has 12 divisors (see below), whose sum is σ = 17041192. Its totient is φ = 4852080.

The previous prime is 9720959. The next prime is 9721013. The reversal of 9720988 is 8890279.

It is a super-2 number, since 2×9720988² = 188995215392288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1006 + ... + 4522.

Almost surely, 2^9720988 is an apocalyptic number.

It is an amenable number.

9720988 is a deficient number, since it is larger than the sum of its proper divisors (7320204).

9720988 is a wasteful number, since it uses less digits than its factorization.

9720988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4212 (or 4210 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 9720988 is about 3117.8499001716. The cubic root of 9720988 is about 213.4208289104.

The spelling of 9720988 in words is "nine million, seven hundred twenty thousand, nine hundred eighty-eight".