22530244 has 24 divisors (see below), whose sum is σ = 43142400. Its totient is φ = 10210080.

The previous prime is 22530239. The next prime is 22530251. The reversal of 22530244 is 44203522.

It is a super-2 number, since 2×22530244² = 1015223789399072, which contains 22 as substring.

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

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, 20542 + ... + 21610.

It is an arithmetic number, because the mean of its divisors is an integer number (1797600).

Almost surely, 2^22530244 is an apocalyptic number.

It is an amenable number.

22530244 is a deficient number, since it is larger than the sum of its proper divisors (20612156).

22530244 is a wasteful number, since it uses less digits than its factorization.

22530244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563 (or 1561 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 22530244 is about 4746.6034171816. The cubic root of 22530244 is about 282.4372440025.

Adding to 22530244 its reverse (44203522), we get a palindrome (66733766).

The spelling of 22530244 in words is "twenty-two million, five hundred thirty thousand, two hundred forty-four".