2939920 has 20 divisors (see below), whose sum is σ = 6835500. Its totient is φ = 1175936.

The previous prime is 2939917. The next prime is 2939941. The reversal of 2939920 is 299392.

2939920 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 2 ways, for example, as 665856 + 2274064 = 816^2 + 1508^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18295 + ... + 18454.

It is an arithmetic number, because the mean of its divisors is an integer number (341775).

2^2939920 is an apocalyptic number.

2939920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2939920 is an abundant number, since it is smaller than the sum of its proper divisors (3895580).

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

2939920 is a wasteful number, since it uses less digits than its factorization.

2939920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36762 (or 36756 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 2939920 is about 1714.6194913158. The cubic root of 2939920 is about 143.2556757384.

The spelling of 2939920 in words is "two million, nine hundred thirty-nine thousand, nine hundred twenty".