7923722920 has 16 divisors (see below), whose sum is σ = 17828376660. Its totient is φ = 3169489152.

The previous prime is 7923722909. The next prime is 7923722921. The reversal of 7923722920 is 292273297.

It can be written as a sum of positive squares in 2 ways, for example, as 6833006244 + 1090716676 = 82662^2 + 33026^2 .

It is not an unprimeable number, because it can be changed into a prime (7923722921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99046497 + ... + 99046576.

Almost surely, 2^7923722920 is an apocalyptic number.

It is an amenable number.

7923722920 is an abundant number, since it is smaller than the sum of its proper divisors (9904653740).

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

7923722920 is a wasteful number, since it uses less digits than its factorization.

7923722920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198093084 (or 198093080 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 7923722920 is about 89015.2959889479. The cubic root of 7923722920 is about 1993.6232669122.

The spelling of 7923722920 in words is "seven billion, nine hundred twenty-three million, seven hundred twenty-two thousand, nine hundred twenty".