12172764 has 12 divisors (see below), whose sum is σ = 28403144. Its totient is φ = 4057584.

The previous prime is 12172763. The next prime is 12172789. The reversal of 12172764 is 46727121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12172763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507187 + ... + 507210.

Almost surely, 2^12172764 is an apocalyptic number.

It is an amenable number.

12172764 is an abundant number, since it is smaller than the sum of its proper divisors (16230380).

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

12172764 is a wasteful number, since it uses less digits than its factorization.

12172764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014404 (or 1014402 counting only the distinct ones).

The product of its digits is 4704, while the sum is 30.

The square root of 12172764 is about 3488.9488388338. The cubic root of 12172764 is about 230.0363143669.

Adding to 12172764 its reverse (46727121), we get a palindrome (58899885).

The spelling of 12172764 in words is "twelve million, one hundred seventy-two thousand, seven hundred sixty-four".