22845172 has 24 divisors (see below), whose sum is σ = 46625600. Its totient is φ = 9790200.

The previous prime is 22845157. The next prime is 22845197. The reversal of 22845172 is 27154822.

It is a happy number.

It is a super-3 number, since 3×22845172³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6954 + ... + 9697.

Almost surely, 2^22845172 is an apocalyptic number.

It is an amenable number.

22845172 is an abundant number, since it is smaller than the sum of its proper divisors (23780428).

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

22845172 is a wasteful number, since it uses less digits than its factorization.

22845172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16676 (or 16660 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 22845172 is about 4779.6623311694. The cubic root of 22845172 is about 283.7471299366.

Adding to 22845172 its reverse (27154822), we get a palindrome (49999994).

The spelling of 22845172 in words is "twenty-two million, eight hundred forty-five thousand, one hundred seventy-two".