2156964 has 24 divisors (see below), whose sum is σ = 5066880. Its totient is φ = 714144.

The previous prime is 2156939. The next prime is 2156993. The reversal of 2156964 is 4696512.

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, 1557 + ... + 2595.

It is an arithmetic number, because the mean of its divisors is an integer number (211120).

2^2156964 is an apocalyptic number.

It is an amenable number.

2156964 is an abundant number, since it is smaller than the sum of its proper divisors (2909916).

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

2156964 is a wasteful number, since it uses less digits than its factorization.

2156964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219 (or 1217 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 2156964 is about 1468.6606143013. The cubic root of 2156964 is about 129.2054894516.

The spelling of 2156964 in words is "two million, one hundred fifty-six thousand, nine hundred sixty-four".