22621444 has 12 divisors (see below), whose sum is σ = 40864768. Its totient is φ = 10945800.

The previous prime is 22621439. The next prime is 22621447. The reversal of 22621444 is 44412622.

It is a happy number.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22621447) 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, 91092 + ... + 91339.

Almost surely, 2^22621444 is an apocalyptic number.

It is an amenable number.

22621444 is a deficient number, since it is larger than the sum of its proper divisors (18243324).

22621444 is a wasteful number, since it uses less digits than its factorization.

22621444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182466 (or 182464 counting only the distinct ones).

The product of its digits is 3072, while the sum is 25.

The square root of 22621444 is about 4756.2005845002. The cubic root of 22621444 is about 282.8178227929.

The spelling of 22621444 in words is "twenty-two million, six hundred twenty-one thousand, four hundred forty-four".