7878970 has 32 divisors (see below), whose sum is σ = 15857856. Its totient is φ = 2793600.

The previous prime is 7878967. The next prime is 7878979. The reversal of 7878970 is 798787.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 7878970.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7878979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3637 + ... + 5383.

It is an arithmetic number, because the mean of its divisors is an integer number (495558).

Almost surely, 2^7878970 is an apocalyptic number.

7878970 is an abundant number, since it is smaller than the sum of its proper divisors (7978886).

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

7878970 is a wasteful number, since it uses less digits than its factorization.

7878970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806.

The product of its (nonzero) digits is 197568, while the sum is 46.

The square root of 7878970 is about 2806.9503023744. The cubic root of 7878970 is about 198.9862872801.

The spelling of 7878970 in words is "seven million, eight hundred seventy-eight thousand, nine hundred seventy".