7876840 has 32 divisors (see below), whose sum is σ = 17832960. Its totient is φ = 3131200.

The previous prime is 7876837. The next prime is 7876859. The reversal of 7876840 is 486787.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 7876793 and 7876802.

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, 7125 + ... + 8155.

It is an arithmetic number, because the mean of its divisors is an integer number (557280).

Almost surely, 2^7876840 is an apocalyptic number.

It is an amenable number.

7876840 is an abundant number, since it is smaller than the sum of its proper divisors (9956120).

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

7876840 is a wasteful number, since it uses less digits than its factorization.

7876840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233 (or 1229 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 7876840 is about 2806.5708613894. The cubic root of 7876840 is about 198.9683543527.

The spelling of 7876840 in words is "seven million, eight hundred seventy-six thousand, eight hundred forty".