22506252 has 12 divisors (see below), whose sum is σ = 52514616. Its totient is φ = 7502080.

The previous prime is 22506247. The next prime is 22506269. The reversal of 22506252 is 25260522.

It is a tau number, because it is divible by the number of its divisors (12).

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, 937749 + ... + 937772.

It is an arithmetic number, because the mean of its divisors is an integer number (4376218).

Almost surely, 2^22506252 is an apocalyptic number.

It is an amenable number.

22506252 is an abundant number, since it is smaller than the sum of its proper divisors (30008364).

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

22506252 is a wasteful number, since it uses less digits than its factorization.

22506252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875528 (or 1875526 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 22506252 is about 4744.0754631435. The cubic root of 22506252 is about 282.3369544972.

Adding to 22506252 its reverse (25260522), we get a palindrome (47766774).

The spelling of 22506252 in words is "twenty-two million, five hundred six thousand, two hundred fifty-two".