22404732 has 48 divisors (see below), whose sum is σ = 60318720. Its totient is φ = 6340032.

The previous prime is 22404731. The next prime is 22404757. The reversal of 22404732 is 23740422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22404731) 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, 7933 + ... + 10379.

It is an arithmetic number, because the mean of its divisors is an integer number (1256640).

Almost surely, 2^22404732 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 22404732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30159360).

22404732 is an abundant number, since it is smaller than the sum of its proper divisors (37913988).

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

22404732 is a wasteful number, since it uses less digits than its factorization.

22404732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570 (or 2568 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 22404732 is about 4733.3637088227. The cubic root of 22404732 is about 281.9117977764.

The spelling of 22404732 in words is "twenty-two million, four hundred four thousand, seven hundred thirty-two".