22640252 has 12 divisors (see below), whose sum is σ = 39887400. Its totient is φ = 11243856.

The previous prime is 22640249. The next prime is 22640269. The reversal of 22640252 is 25204622.

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, 18398 + ... + 19589.

It is an arithmetic number, because the mean of its divisors is an integer number (3323950).

Almost surely, 2^22640252 is an apocalyptic number.

It is an amenable number.

22640252 is a deficient number, since it is larger than the sum of its proper divisors (17247148).

22640252 is a wasteful number, since it uses less digits than its factorization.

22640252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38140 (or 38138 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 22640252 is about 4758.1773821496. The cubic root of 22640252 is about 282.8961815412.

Adding to 22640252 its reverse (25204622), we get a palindrome (47844874).

The spelling of 22640252 in words is "twenty-two million, six hundred forty thousand, two hundred fifty-two".