22154232 has 32 divisors (see below), whose sum is σ = 55504080. Its totient is φ = 7368960.

The previous prime is 22154203. The next prime is 22154233. The reversal of 22154232 is 23245122.

It is a junction number, because it is equal to n+sod(n) for n = 22154199 and 22154208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22154233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17658 + ... + 18870.

Almost surely, 2^22154232 is an apocalyptic number.

It is an amenable number.

22154232 is an abundant number, since it is smaller than the sum of its proper divisors (33349848).

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

22154232 is a wasteful number, since it uses less digits than its factorization.

22154232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983 (or 1979 counting only the distinct ones).

The product of its digits is 960, while the sum is 21.

The square root of 22154232 is about 4706.8282314102. The cubic root of 22154232 is about 280.8572029791.

Adding to 22154232 its reverse (23245122), we get a palindrome (45399354).

The spelling of 22154232 in words is "twenty-two million, one hundred fifty-four thousand, two hundred thirty-two".