22706172 has 36 divisors (see below), whose sum is σ = 57790096. Its totient is φ = 7516800.

The previous prime is 22706161. The next prime is 22706179. The reversal of 22706172 is 27160722.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22706179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3348 + ... + 7524.

Almost surely, 2^22706172 is an apocalyptic number.

It is an amenable number.

22706172 is an abundant number, since it is smaller than the sum of its proper divisors (35083924).

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

22706172 is a wasteful number, since it uses less digits than its factorization.

22706172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4338 (or 4333 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 22706172 is about 4765.0993693731. The cubic root of 22706172 is about 283.1704783456.

Adding to 22706172 its reverse (27160722), we get a palindrome (49866894).

The spelling of 22706172 in words is "twenty-two million, seven hundred six thousand, one hundred seventy-two".