2659920 has 40 divisors (see below), whose sum is σ = 8246496. Its totient is φ = 709248.

The previous prime is 2659903. The next prime is 2659931. The reversal of 2659920 is 299562.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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, 5302 + ... + 5781.

2^2659920 is an apocalyptic number.

2659920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2659920 is an abundant number, since it is smaller than the sum of its proper divisors (5586576).

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

2659920 is a wasteful number, since it uses less digits than its factorization.

2659920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11099 (or 11093 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 2659920 is about 1630.9261172720. The cubic root of 2659920 is about 138.5552091711. Note that the first 3 decimals are identical.

The spelling of 2659920 in words is "two million, six hundred fifty-nine thousand, nine hundred twenty".