2205444 has 48 divisors (see below), whose sum is σ = 5745600. Its totient is φ = 654336.

The previous prime is 2205409. The next prime is 2205449. The reversal of 2205444 is 4445022.

It is a self number, because there is not a number n which added to its sum of digits gives 2205444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205449) 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, 3592 + ... + 4160.

It is an arithmetic number, because the mean of its divisors is an integer number (119700).

2^2205444 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 2205444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2872800).

2205444 is an abundant number, since it is smaller than the sum of its proper divisors (3540156).

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

2205444 is a wasteful number, since it uses less digits than its factorization.

2205444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 2205444 is about 1485.0737355431. The cubic root of 2205444 is about 130.1663354060.

The spelling of 2205444 in words is "two million, two hundred five thousand, four hundred forty-four".