22564212 has 48 divisors (see below), whose sum is σ = 57792000. Its totient is φ = 6795360.

The previous prime is 22564211. The next prime is 22564231. The reversal of 22564212 is 21246522.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22564211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25839 + ... + 26697.

It is an arithmetic number, because the mean of its divisors is an integer number (1204000).

Almost surely, 2^22564212 is an apocalyptic number.

22564212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22564212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28896000).

22564212 is an abundant number, since it is smaller than the sum of its proper divisors (35227788).

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

22564212 is a wasteful number, since it uses less digits than its factorization.

22564212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076 (or 1074 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 22564212 is about 4750.1802071079. The cubic root of 22564212 is about 282.5791127268.

The spelling of 22564212 in words is "twenty-two million, five hundred sixty-four thousand, two hundred twelve".