9930942720 has 108 divisors (see below), whose sum is σ = 34360067196. Its totient is φ = 2648248320.

The previous prime is 9930942701. The next prime is 9930942739. The reversal of 9930942720 is 272490399.

It is an interprime number because it is at equal distance from previous prime (9930942701) and next prime (9930942739).

It can be written as a sum of positive squares in 2 ways, for example, as 3681091584 + 6249851136 = 60672^2 + 79056^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 419511 + ... + 442550.

Almost surely, 2^9930942720 is an apocalyptic number.

9930942720 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9930942720 is an abundant number, since it is smaller than the sum of its proper divisors (24429124476).

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

9930942720 is a wasteful number, since it uses less digits than its factorization.

9930942720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862088 (or 862071 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 9930942720 is about 99654.1154192841. The cubic root of 9930942720 is about 2149.4639168213.

The spelling of 9930942720 in words is "nine billion, nine hundred thirty million, nine hundred forty-two thousand, seven hundred twenty".