7992457920 has 280 divisors, whose sum is σ = 29928769200. Its totient is φ = 2019022848.

The previous prime is 7992457871. The next prime is 7992457943. The reversal of 7992457920 is 297542997.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 484366 + ... + 500594.

Almost surely, 2^7992457920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7992457920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14964384600).

7992457920 is an abundant number, since it is smaller than the sum of its proper divisors (21936311280).

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

7992457920 is a wasteful number, since it uses less digits than its factorization.

7992457920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16277 (or 16258 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The square root of 7992457920 is about 89400.5476493293. The cubic root of 7992457920 is about 1999.3712957195.

The spelling of 7992457920 in words is "seven billion, nine hundred ninety-two million, four hundred fifty-seven thousand, nine hundred twenty".