22744512 has 84 divisors (see below), whose sum is σ = 74519536. Its totient is φ = 6497280.

The previous prime is 22744511. The next prime is 22744523. The reversal of 22744512 is 21544722.

It is a tau number, because it is divible by the number of its divisors (84).

It is a super-2 number, since 2×22744512² = 1034625652236288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22744511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1212 + ... + 6852.

Almost surely, 2^22744512 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 22744512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37259768).

22744512 is an abundant number, since it is smaller than the sum of its proper divisors (51775024).

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

22744512 is a wasteful number, since it uses less digits than its factorization.

22744512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5666 (or 5653 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 22744512 is about 4769.1206736672. The cubic root of 22744512 is about 283.3297691209.

It can be divided in two parts, 2274 and 4512, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 22744512 in words is "twenty-two million, seven hundred forty-four thousand, five hundred twelve".