22404528 has 60 divisors (see below), whose sum is σ = 63164608. Its totient is φ = 7413120.

The previous prime is 22404523. The next prime is 22404539. The reversal of 22404528 is 82540422.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22404523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22113 + ... + 23103.

Almost surely, 2^22404528 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 22404528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31582304).

22404528 is an abundant number, since it is smaller than the sum of its proper divisors (40760080).

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

22404528 is a wasteful number, since it uses less digits than its factorization.

22404528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162 (or 1153 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 22404528 is about 4733.3421596162. The cubic root of 22404528 is about 281.9109421509.

It can be divided in two parts, 22 and 404528, that added together give a triangular number (404550 = T₈₉₉).

The spelling of 22404528 in words is "twenty-two million, four hundred four thousand, five hundred twenty-eight".