2044644 has 48 divisors (see below), whose sum is σ = 5529216. Its totient is φ = 576000.

The previous prime is 2044633. The next prime is 2044649. The reversal of 2044644 is 4464402.

It is not an unprimeable number, because it can be changed into a prime (2044649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8364 + ... + 8604.

It is an arithmetic number, because the mean of its divisors is an integer number (115192).

2^2044644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2044644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2764608).

2044644 is an abundant number, since it is smaller than the sum of its proper divisors (3484572).

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

2044644 is a wasteful number, since it uses less digits than its factorization.

2044644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 2044644 is about 1429.9104867089. The cubic root of 2044644 is about 126.9226801146.

It can be divided in two parts, 204 and 4644, that multiplied together give a triangular number (947376 = T₁₃₇₆).

The spelling of 2044644 in words is "two million, forty-four thousand, six hundred forty-four".