7907920056 has 128 divisors (see below), whose sum is σ = 23577998400. Its totient is φ = 2446848000.

The previous prime is 7907920003. The next prime is 7907920057. The reversal of 7907920056 is 6500297097.

It is a super-2 number, since 2×7907920056² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7907919993 and 7907920020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7907920057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 253306 + ... + 282806.

Almost surely, 2^7907920056 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 7907920056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11788999200).

7907920056 is an abundant number, since it is smaller than the sum of its proper divisors (15670078344).

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

7907920056 is a wasteful number, since it uses less digits than its factorization.

7907920056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29606 (or 29596 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 7907920056 is about 88926.4868079247. The cubic root of 7907920056 is about 1992.2970416379.

The spelling of 7907920056 in words is "seven billion, nine hundred seven million, nine hundred twenty thousand, fifty-six".