22232154 has 32 divisors (see below), whose sum is σ = 52571520. Its totient is φ = 6132672.

The previous prime is 22232143. The next prime is 22232167. The reversal of 22232154 is 45123222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 22232154.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7909 + ... + 10344.

It is an arithmetic number, because the mean of its divisors is an integer number (1642860).

Almost surely, 2^22232154 is an apocalyptic number.

22232154 is an abundant number, since it is smaller than the sum of its proper divisors (30339366).

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

22232154 is a wasteful number, since it uses less digits than its factorization.

22232154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18294.

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

The square root of 22232154 is about 4715.0985143473. The cubic root of 22232154 is about 281.1860994581.

Adding to 22232154 its reverse (45123222), we get a palindrome (67355376).

The spelling of 22232154 in words is "twenty-two million, two hundred thirty-two thousand, one hundred fifty-four".