22543132 has 12 divisors (see below), whose sum is σ = 39926376. Its totient is φ = 11135600.

The previous prime is 22543109. The next prime is 22543141. The reversal of 22543132 is 23134522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33619 + ... + 34282.

It is an arithmetic number, because the mean of its divisors is an integer number (3327198).

Almost surely, 2^22543132 is an apocalyptic number.

It is an amenable number.

22543132 is a deficient number, since it is larger than the sum of its proper divisors (17383244).

22543132 is a wasteful number, since it uses less digits than its factorization.

22543132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67988 (or 67986 counting only the distinct ones).

The product of its digits is 1440, while the sum is 22.

The square root of 22543132 is about 4747.9608254492. The cubic root of 22543132 is about 282.4910880317.

Adding to 22543132 its reverse (23134522), we get a palindrome (45677654).

The spelling of 22543132 in words is "twenty-two million, five hundred forty-three thousand, one hundred thirty-two".