7804021992 has 64 divisors (see below), whose sum is σ = 21924362880. Its totient is φ = 2296833792.

The previous prime is 7804021961. The next prime is 7804022033. The reversal of 7804021992 is 2991204087.

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, 536583 + ... + 550934.

It is an arithmetic number, because the mean of its divisors is an integer number (342568170).

Almost surely, 2^7804021992 is an apocalyptic number.

It is an amenable number.

7804021992 is an abundant number, since it is smaller than the sum of its proper divisors (14120340888).

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

7804021992 is a wasteful number, since it uses less digits than its factorization.

7804021992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087562 (or 1087558 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 7804021992 is about 88340.3757746140. The cubic root of 7804021992 is about 1983.5332952325.

The spelling of 7804021992 in words is "seven billion, eight hundred four million, twenty-one thousand, nine hundred ninety-two".