22405564 has 6 divisors (see below), whose sum is σ = 39209744. Its totient is φ = 11202780.

The previous prime is 22405561. The next prime is 22405567. The reversal of 22405564 is 46550422.

It is an interprime number because it is at equal distance from previous prime (22405561) and next prime (22405567).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22405561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2800692 + ... + 2800699.

Almost surely, 2^22405564 is an apocalyptic number.

It is an amenable number.

22405564 is a deficient number, since it is larger than the sum of its proper divisors (16804180).

22405564 is a wasteful number, since it uses less digits than its factorization.

22405564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5601395 (or 5601393 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 22405564 is about 4733.4515947668. The cubic root of 22405564 is about 281.9152873326.

Adding to 22405564 its reverse (46550422), we get a palindrome (68955986).

The spelling of 22405564 in words is "twenty-two million, four hundred five thousand, five hundred sixty-four".