22641812 has 12 divisors (see below), whose sum is σ = 40371156. Its totient is φ = 11107200.

The previous prime is 22641809. The next prime is 22641869. The reversal of 22641812 is 21814622.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10010896 + 12630916 = 3164^2 + 3554^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53189 + ... + 53612.

It is an arithmetic number, because the mean of its divisors is an integer number (3364263).

Almost surely, 2^22641812 is an apocalyptic number.

It is an amenable number.

22641812 is a deficient number, since it is larger than the sum of its proper divisors (17729344).

22641812 is a wasteful number, since it uses less digits than its factorization.

22641812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106858 (or 106856 counting only the distinct ones).

The product of its digits is 1536, while the sum is 26.

The square root of 22641812 is about 4758.3413076407. The cubic root of 22641812 is about 282.9026789352.

The spelling of 22641812 in words is "twenty-two million, six hundred forty-one thousand, eight hundred twelve".