2156044 has 24 divisors (see below), whose sum is σ = 4334400. Its totient is φ = 928080.

The previous prime is 2156041. The next prime is 2156053. The reversal of 2156044 is 4406512.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (2156041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454 + ... + 2125.

It is an arithmetic number, because the mean of its divisors is an integer number (180600).

2^2156044 is an apocalyptic number.

It is an amenable number.

2156044 is an abundant number, since it is smaller than the sum of its proper divisors (2178356).

2156044 is a wasteful number, since it uses less digits than its factorization.

2156044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613 (or 2611 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2156044 is about 1468.3473703453. The cubic root of 2156044 is about 129.1871170303.

It can be divided in two parts, 21 and 56044, that added together give a palindrome (56065).

The spelling of 2156044 in words is "two million, one hundred fifty-six thousand, forty-four".