9998997320 has 64 divisors (see below), whose sum is σ = 24240384000. Its totient is φ = 3690102528.

The previous prime is 9998997313. The next prime is 9998997341. The reversal of 9998997320 is 237998999.

It is a hoax number, since the sum of its digits (65) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (65).

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, 1493741 + ... + 1500419.

It is an arithmetic number, because the mean of its divisors is an integer number (378756000).

Almost surely, 2^9998997320 is an apocalyptic number.

It is an amenable number.

9998997320 is an abundant number, since it is smaller than the sum of its proper divisors (14241386680).

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

9998997320 is a wasteful number, since it uses less digits than its factorization.

9998997320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9582 (or 9578 counting only the distinct ones).

The product of its (nonzero) digits is 19840464, while the sum is 65.

The square root of 9998997320 is about 99994.9864743228. The cubic root of 9998997320 is about 2154.3626806726.

The spelling of 9998997320 in words is "nine billion, nine hundred ninety-eight million, nine hundred ninety-seven thousand, three hundred twenty".