22305132 has 60 divisors (see below), whose sum is σ = 59703336. Its totient is φ = 7257600.

The previous prime is 22305109. The next prime is 22305133. The reversal of 22305132 is 23150322.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22305133) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13132 + ... + 14732.

Almost surely, 2^22305132 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 22305132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29851668).

22305132 is an abundant number, since it is smaller than the sum of its proper divisors (37398204).

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

22305132 is a wasteful number, since it uses less digits than its factorization.

22305132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660 (or 1649 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 22305132 is about 4722.8309307025. The cubic root of 22305132 is about 281.4934319069.

Adding to 22305132 its reverse (23150322), we get a palindrome (45455454).

The spelling of 22305132 in words is "twenty-two million, three hundred five thousand, one hundred thirty-two".