7995840 has 56 divisors (see below), whose sum is σ = 25389840. Its totient is φ = 2131968.

The previous prime is 7995839. The next prime is 7995863. The reversal of 7995840 is 485997.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7995792 and 7995801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3205 + ... + 5124.

It is an arithmetic number, because the mean of its divisors is an integer number (453390).

Almost surely, 2^7995840 is an apocalyptic number.

It is an amenable number.

7995840 is an abundant number, since it is smaller than the sum of its proper divisors (17394000).

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

7995840 is a wasteful number, since it uses less digits than its factorization.

7995840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8349 (or 8339 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 7995840 is about 2827.6916380681. The cubic root of 7995840 is about 199.9653273227.

The spelling of 7995840 in words is "seven million, nine hundred ninety-five thousand, eight hundred forty".