2979920 has 30 divisors (see below), whose sum is σ = 6964398. Its totient is φ = 1185792.

The previous prime is 2979919. The next prime is 2979931. The reversal of 2979920 is 299792.

2979920 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 7744 + 2972176 = 88^2 + 1724^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15344 + ... + 15536.

2^2979920 is an apocalyptic number.

2979920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2979920 is an abundant number, since it is smaller than the sum of its proper divisors (3984478).

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

2979920 is an equidigital number, since it uses as much as digits as its factorization.

2979920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 2979920 is about 1726.2444786298. The cubic root of 2979920 is about 143.9024545138.

The spelling of 2979920 in words is "two million, nine hundred seventy-nine thousand, nine hundred twenty".