22135564 has 48 divisors (see below), whose sum is σ = 45341856. Its totient is φ = 9344000.

The previous prime is 22135559. The next prime is 22135577. The reversal of 22135564 is 46553122.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75402 + ... + 75694.

It is an arithmetic number, because the mean of its divisors is an integer number (944622).

Almost surely, 2^22135564 is an apocalyptic number.

It is an amenable number.

22135564 is an abundant number, since it is smaller than the sum of its proper divisors (23206292).

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

22135564 is a wasteful number, since it uses less digits than its factorization.

22135564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 424 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 22135564 is about 4704.8447370769. The cubic root of 22135564 is about 280.7782938176.

Adding to 22135564 its reverse (46553122), we get a palindrome (68688686).

It can be divided in two parts, 2213 and 5564, that added together give a palindrome (7777).

The spelling of 22135564 in words is "twenty-two million, one hundred thirty-five thousand, five hundred sixty-four".