12179772 has 36 divisors (see below), whose sum is σ = 33587736. Its totient is φ = 3690720.

The previous prime is 12179767. The next prime is 12179773. The reversal of 12179772 is 27797121.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12179773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14983 + ... + 15774.

Almost surely, 2^12179772 is an apocalyptic number.

12179772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12179772 is an abundant number, since it is smaller than the sum of its proper divisors (21407964).

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

12179772 is a wasteful number, since it uses less digits than its factorization.

12179772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30778 (or 30773 counting only the distinct ones).

The product of its digits is 12348, while the sum is 36.

The square root of 12179772 is about 3489.9530082796. The cubic root of 12179772 is about 230.0804507472.

The spelling of 12179772 in words is "twelve million, one hundred seventy-nine thousand, seven hundred seventy-two".