7879980 has 48 divisors (see below), whose sum is σ = 22436064. Its totient is φ = 2065920.

The previous prime is 7879979. The next prime is 7879999. The reversal of 7879980 is 899787.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2584 + ... + 4736.

It is an arithmetic number, because the mean of its divisors is an integer number (467418).

Almost surely, 2^7879980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7879980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11218032).

7879980 is an abundant number, since it is smaller than the sum of its proper divisors (14556084).

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

7879980 is a wasteful number, since it uses less digits than its factorization.

7879980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226 (or 2224 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 48.

The square root of 7879980 is about 2807.1302071689. The cubic root of 7879980 is about 198.9947895574.

The spelling of 7879980 in words is "seven million, eight hundred seventy-nine thousand, nine hundred eighty".