22621136 has 20 divisors (see below), whose sum is σ = 43978212. Its totient is φ = 11271936.

The previous prime is 22621127. The next prime is 22621141. The reversal of 22621136 is 63112622.

It can be written as a sum of positive squares in 2 ways, for example, as 115600 + 22505536 = 340^2 + 4744^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2750 + ... + 7266.

Almost surely, 2^22621136 is an apocalyptic number.

It is an amenable number.

22621136 is a deficient number, since it is larger than the sum of its proper divisors (21357076).

22621136 is a wasteful number, since it uses less digits than its factorization.

22621136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4838 (or 4832 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 22621136 is about 4756.1682056042. The cubic root of 22621136 is about 282.8165392278.

Adding to 22621136 its reverse (63112622), we get a palindrome (85733758).

The spelling of 22621136 in words is "twenty-two million, six hundred twenty-one thousand, one hundred thirty-six".