22616172 has 90 divisors (see below), whose sum is σ = 61969908. Its totient is φ = 7191072.

The previous prime is 22616149. The next prime is 22616173. The reversal of 22616172 is 27161622.

It is a super-2 number, since 2×22616172² = 1022982471867168, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22616173) 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 29 ways as a sum of consecutive naturals, for example, 272443 + ... + 272525.

Almost surely, 2^22616172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22616172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30984954).

22616172 is an abundant number, since it is smaller than the sum of its proper divisors (39353736).

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

22616172 is a wasteful number, since it uses less digits than its factorization.

22616172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 117 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 22616172 is about 4755.6463283133. The cubic root of 22616172 is about 282.7958505527.

Adding to 22616172 its reverse (27161622), we get a palindrome (49777794).

The spelling of 22616172 in words is "twenty-two million, six hundred sixteen thousand, one hundred seventy-two".