22165452 has 36 divisors (see below), whose sum is σ = 56369040. Its totient is φ = 7343712.

The previous prime is 22165447. The next prime is 22165459. The reversal of 22165452 is 25456122.

22165452 is a `hidden beast` number, since 2 + 2 + 1 + 654 + 5 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (22165459) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4449 + ... + 8007.

Almost surely, 2^22165452 is an apocalyptic number.

It is an amenable number.

22165452 is an abundant number, since it is smaller than the sum of its proper divisors (34203588).

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

22165452 is a wasteful number, since it uses less digits than its factorization.

22165452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3742 (or 3737 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 22165452 is about 4708.0199659730. The cubic root of 22165452 is about 280.9046083084.

The spelling of 22165452 in words is "twenty-two million, one hundred sixty-five thousand, four hundred fifty-two".