22524720 has 80 divisors (see below), whose sum is σ = 70471680. Its totient is φ = 5951232.

The previous prime is 22524713. The next prime is 22524721. The reversal of 22524720 is 2742522.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×22524720² = 1014726022156800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (22524721) 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 15 ways as a sum of consecutive naturals, for example, 30111 + ... + 30849.

It is an arithmetic number, because the mean of its divisors is an integer number (880896).

Almost surely, 2^22524720 is an apocalyptic number.

22524720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22524720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35235840).

22524720 is an abundant number, since it is smaller than the sum of its proper divisors (47946960).

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

22524720 is a wasteful number, since it uses less digits than its factorization.

22524720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 22524720 is about 4746.0214917339. The cubic root of 22524720 is about 282.4141593159.

The spelling of 22524720 in words is "twenty-two million, five hundred twenty-four thousand, seven hundred twenty".