22239532 has 18 divisors (see below), whose sum is σ = 45273732. Its totient is φ = 9531144.

The previous prime is 22239517. The next prime is 22239533. The reversal of 22239532 is 23593222.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 22239532.

It is not an unprimeable number, because it can be changed into a prime (22239533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56538 + ... + 56929.

Almost surely, 2^22239532 is an apocalyptic number.

It is an amenable number.

22239532 is an abundant number, since it is smaller than the sum of its proper divisors (23034200).

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

22239532 is a wasteful number, since it uses less digits than its factorization.

22239532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113485 (or 113476 counting only the distinct ones).

The product of its digits is 6480, while the sum is 28.

The square root of 22239532 is about 4715.8808297072. The cubic root of 22239532 is about 281.2172009818.

The spelling of 22239532 in words is "twenty-two million, two hundred thirty-nine thousand, five hundred thirty-two".