22745472 has 32 divisors (see below), whose sum is σ = 60418680. Its totient is φ = 7581696.

The previous prime is 22745453. The next prime is 22745477. The reversal of 22745472 is 27454722.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22745477) 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, 29233 + ... + 30000.

Almost surely, 2^22745472 is an apocalyptic number.

It is an amenable number.

22745472 is an abundant number, since it is smaller than the sum of its proper divisors (37673208).

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

22745472 is an equidigital number, since it uses as much as digits as its factorization.

22745472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59250 (or 59238 counting only the distinct ones).

The product of its digits is 31360, while the sum is 33.

The square root of 22745472 is about 4769.2213200899. The cubic root of 22745472 is about 283.3337553242. Note that the first 3 decimals are identical.

The spelling of 22745472 in words is "twenty-two million, seven hundred forty-five thousand, four hundred seventy-two".