22747264 has 32 divisors (see below), whose sum is σ = 45973440. Its totient is φ = 11208960.

The previous prime is 22747261. The next prime is 22747271. The reversal of 22747264 is 46274722.

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

It is not an unprimeable number, because it can be changed into a prime (22747261) 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, 7837 + ... + 10339.

It is an arithmetic number, because the mean of its divisors is an integer number (1436670).

Almost surely, 2^22747264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22747264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22986720).

22747264 is an abundant number, since it is smaller than the sum of its proper divisors (23226176).

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

22747264 is an equidigital number, since it uses as much as digits as its factorization.

22747264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588 (or 2576 counting only the distinct ones).

The product of its digits is 37632, while the sum is 34.

The square root of 22747264 is about 4769.4091877297. The cubic root of 22747264 is about 283.3411959371.

The spelling of 22747264 in words is "twenty-two million, seven hundred forty-seven thousand, two hundred sixty-four".