9998788 has 48 divisors (see below), whose sum is σ = 19958400. Its totient is φ = 4354560.

The previous prime is 9998777. The next prime is 9998797. The reversal of 9998788 is 8878999.

It is a super-2 number, since 2×9998788² = 199951522937888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91678 + ... + 91786.

It is an arithmetic number, because the mean of its divisors is an integer number (415800).

Almost surely, 2^9998788 is an apocalyptic number.

It is an amenable number.

9998788 is a deficient number, since it is larger than the sum of its proper divisors (9959612).

9998788 is a wasteful number, since it uses less digits than its factorization.

9998788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 218 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 58.

The square root of 9998788 is about 3162.0860203353. The cubic root of 9998788 is about 215.4347647354.

The spelling of 9998788 in words is "nine million, nine hundred ninety-eight thousand, seven hundred eighty-eight".