2578920 has 32 divisors (see below), whose sum is σ = 7737120. Its totient is φ = 687680.

The previous prime is 2578907. The next prime is 2578931. The reversal of 2578920 is 298752.

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, 10626 + ... + 10865.

It is an arithmetic number, because the mean of its divisors is an integer number (241785).

2^2578920 is an apocalyptic number.

2578920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2578920 is an abundant number, since it is smaller than the sum of its proper divisors (5158200).

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

2578920 is a wasteful number, since it uses less digits than its factorization.

2578920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21505 (or 21501 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 2578920 is about 1605.9016159155. The cubic root of 2578920 is about 137.1342566531.

The spelling of 2578920 in words is "two million, five hundred seventy-eight thousand, nine hundred twenty".