2205944 has 16 divisors (see below), whose sum is σ = 4454520. Its totient is φ = 1018080.

The previous prime is 2205911. The next prime is 2205947. The reversal of 2205944 is 4495022.

2205944 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2205944² = 9732377862272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10502 + ... + 10709.

2^2205944 is an apocalyptic number.

It is an amenable number.

2205944 is an abundant number, since it is smaller than the sum of its proper divisors (2248576).

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

2205944 is a wasteful number, since it uses less digits than its factorization.

2205944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21230 (or 21226 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2205944 is about 1485.2420678125. The cubic root of 2205944 is about 130.1761714073.

The spelling of 2205944 in words is "two million, two hundred five thousand, nine hundred forty-four".