22522428 has 48 divisors (see below), whose sum is σ = 60936960. Its totient is φ = 7180272.

The previous prime is 22522427. The next prime is 22522439. The reversal of 22522428 is 82422522.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22522427) 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, 2050 + ... + 7017.

It is an arithmetic number, because the mean of its divisors is an integer number (1269520).

Almost surely, 2^22522428 is an apocalyptic number.

It is an amenable number.

22522428 is an abundant number, since it is smaller than the sum of its proper divisors (38414532).

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

22522428 is a wasteful number, since it uses less digits than its factorization.

22522428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9103 (or 9095 counting only the distinct ones).

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

The square root of 22522428 is about 4745.7800201864. The cubic root of 22522428 is about 282.4045799855.

The spelling of 22522428 in words is "twenty-two million, five hundred twenty-two thousand, four hundred twenty-eight".