22143632 has 20 divisors (see below), whose sum is σ = 49032576. Its totient is φ = 9490080.

The previous prime is 22143631. The next prime is 22143637. The reversal of 22143632 is 23634122.

It is a junction number, because it is equal to n+sod(n) for n = 22143598 and 22143607.

It is not an unprimeable number, because it can be changed into a prime (22143631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98744 + ... + 98967.

Almost surely, 2^22143632 is an apocalyptic number.

It is an amenable number.

22143632 is an abundant number, since it is smaller than the sum of its proper divisors (26888944).

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

22143632 is a wasteful number, since it uses less digits than its factorization.

22143632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197726 (or 197720 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 22143632 is about 4705.7020730174. The cubic root of 22143632 is about 280.8124024900.

Adding to 22143632 its reverse (23634122), we get a palindrome (45777754).

The spelling of 22143632 in words is "twenty-two million, one hundred forty-three thousand, six hundred thirty-two".