7920856260 has 36 divisors (see below), whose sum is σ = 24026597868. Its totient is φ = 2112228288.

The previous prime is 7920856247. The next prime is 7920856261. The reversal of 7920856260 is 626580297.

7920856260 is a `hidden beast` number, since 7 + 9 + 20 + 8 + 562 + 60 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6155343936 + 1765512324 = 78456^2 + 42018^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (7920856261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22002199 + ... + 22002558.

Almost surely, 2^7920856260 is an apocalyptic number.

It is an amenable number.

7920856260 is an abundant number, since it is smaller than the sum of its proper divisors (16105741608).

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

7920856260 is a wasteful number, since it uses less digits than its factorization.

7920856260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44004772 (or 44004767 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 7920856260 is about 88999.1924682466. The cubic root of 7920856260 is about 1993.3828189363.

The spelling of 7920856260 in words is "seven billion, nine hundred twenty million, eight hundred fifty-six thousand, two hundred sixty".