22123524 has 36 divisors (see below), whose sum is σ = 54492144. Its totient is φ = 6985008.

The previous prime is 22123499. The next prime is 22123547. The reversal of 22123524 is 42532122.

It is a self number, because there is not a number n which added to its sum of digits gives 22123524.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1779 + ... + 6885.

Almost surely, 2^22123524 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 22123524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27246072).

22123524 is an abundant number, since it is smaller than the sum of its proper divisors (32368620).

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

22123524 is a wasteful number, since it uses less digits than its factorization.

22123524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5152 (or 5131 counting only the distinct ones).

The product of its digits is 960, while the sum is 21.

The square root of 22123524 is about 4703.5650309101. The cubic root of 22123524 is about 280.7273775068.

Adding to 22123524 its reverse (42532122), we get a palindrome (64655646).

It can be divided in two parts, 2212352 and 4, that added together give a triangular number (2212356 = T₂₁₀₃).

The spelling of 22123524 in words is "twenty-two million, one hundred twenty-three thousand, five hundred twenty-four".