22158232 has 16 divisors (see below), whose sum is σ = 41601600. Its totient is φ = 11064480.

The previous prime is 22158229. The next prime is 22158239. The reversal of 22158232 is 23285122.

It is a junction number, because it is equal to n+sod(n) for n = 22158197 and 22158206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22158239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7257 + ... + 9847.

It is an arithmetic number, because the mean of its divisors is an integer number (2600100).

Almost surely, 2^22158232 is an apocalyptic number.

It is an amenable number.

22158232 is a deficient number, since it is larger than the sum of its proper divisors (19443368).

22158232 is a wasteful number, since it uses less digits than its factorization.

22158232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3666 (or 3662 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 22158232 is about 4707.2531268246. The cubic root of 22158232 is about 280.8741051103.

The spelling of 22158232 in words is "twenty-two million, one hundred fifty-eight thousand, two hundred thirty-two".