2115444 has 24 divisors (see below), whose sum is σ = 4969440. Its totient is φ = 700384.

The previous prime is 2115437. The next prime is 2115457. The reversal of 2115444 is 4445112.

It is a happy number.

2115444 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2115444.

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, 1567 + ... + 2585.

It is an arithmetic number, because the mean of its divisors is an integer number (207060).

2^2115444 is an apocalyptic number.

It is an amenable number.

2115444 is an abundant number, since it is smaller than the sum of its proper divisors (2853996).

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

2115444 is a wasteful number, since it uses less digits than its factorization.

2115444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199 (or 1197 counting only the distinct ones).

The product of its digits is 640, while the sum is 21.

The square root of 2115444 is about 1454.4565995587. The cubic root of 2115444 is about 128.3710748986.

The spelling of 2115444 in words is "two million, one hundred fifteen thousand, four hundred forty-four".