22291252 has 12 divisors (see below), whose sum is σ = 39043620. Its totient is φ = 11135936.

The previous prime is 22291229. The next prime is 22291253. The reversal of 22291252 is 25219222.

It can be written as a sum of positive squares in 2 ways, for example, as 5035536 + 17255716 = 2244^2 + 4154^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22291253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6024 + ... + 8992.

It is an arithmetic number, because the mean of its divisors is an integer number (3253635).

Almost surely, 2^22291252 is an apocalyptic number.

It is an amenable number.

22291252 is a deficient number, since it is larger than the sum of its proper divisors (16752368).

22291252 is a wasteful number, since it uses less digits than its factorization.

22291252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4850 (or 4848 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 22291252 is about 4721.3612443870. The cubic root of 22291252 is about 281.4350307049.

It can be divided in two parts, 2229 and 1252, that added together give a square (3481 = 59²).

The spelling of 22291252 in words is "twenty-two million, two hundred ninety-one thousand, two hundred fifty-two".