7997856 has 24 divisors (see below), whose sum is σ = 20994624. Its totient is φ = 2665920.

The previous prime is 7997839. The next prime is 7997867. The reversal of 7997856 is 6587997.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 7997799 and 7997808.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41560 + ... + 41751.

It is an arithmetic number, because the mean of its divisors is an integer number (874776).

Almost surely, 2^7997856 is an apocalyptic number.

It is an amenable number.

7997856 is an abundant number, since it is smaller than the sum of its proper divisors (12996768).

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

7997856 is a wasteful number, since it uses less digits than its factorization.

7997856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83324 (or 83316 counting only the distinct ones).

The product of its digits is 952560, while the sum is 51.

The square root of 7997856 is about 2828.0480901145. The cubic root of 7997856 is about 199.9821317370.

The spelling of 7997856 in words is "seven million, nine hundred ninety-seven thousand, eight hundred fifty-six".