22469172 has 144 divisors (see below), whose sum is σ = 66017280. Its totient is φ = 5875200.

The previous prime is 22469131. The next prime is 22469173. The reversal of 22469172 is 27196422.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22469173) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 724797 + ... + 724827.

Almost surely, 2^22469172 is an apocalyptic number.

22469172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22469172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33008640).

22469172 is an abundant number, since it is smaller than the sum of its proper divisors (43548108).

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

22469172 is a wasteful number, since it uses less digits than its factorization.

22469172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 83 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 22469172 is about 4740.1658198844. The cubic root of 22469172 is about 282.1818152505.

It can be divided in two parts, 224 and 69172, that added together give a palindrome (69396).

The spelling of 22469172 in words is "twenty-two million, four hundred sixty-nine thousand, one hundred seventy-two".