22254172 has 12 divisors (see below), whose sum is σ = 39117960. Its totient is φ = 11077616.

The previous prime is 22254161. The next prime is 22254233. The reversal of 22254172 is 27145222.

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, 11347 + ... + 13162.

It is an arithmetic number, because the mean of its divisors is an integer number (3259830).

Almost surely, 2^22254172 is an apocalyptic number.

It is an amenable number.

22254172 is a deficient number, since it is larger than the sum of its proper divisors (16863788).

22254172 is a wasteful number, since it uses less digits than its factorization.

22254172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24740 (or 24738 counting only the distinct ones).

The product of its digits is 2240, while the sum is 25.

The square root of 22254172 is about 4717.4327764156. The cubic root of 22254172 is about 281.2788946774.

Adding to 22254172 its reverse (27145222), we get a palindrome (49399394).

The spelling of 22254172 in words is "twenty-two million, two hundred fifty-four thousand, one hundred seventy-two".