22924728 has 64 divisors (see below), whose sum is σ = 64108800. Its totient is φ = 7590240.

The previous prime is 22924723. The next prime is 22924739. The reversal of 22924728 is 82742922.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 22924692 and 22924701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22924723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45325 + ... + 45827.

It is an arithmetic number, because the mean of its divisors is an integer number (1001700).

Almost surely, 2^22924728 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 22924728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32054400).

22924728 is an abundant number, since it is smaller than the sum of its proper divisors (41184072).

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

22924728 is a wasteful number, since it uses less digits than its factorization.

22924728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 719 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 22924728 is about 4787.9774435559. The cubic root of 22924728 is about 284.0761218947.

The spelling of 22924728 in words is "twenty-two million, nine hundred twenty-four thousand, seven hundred twenty-eight".