12172980 has 48 divisors (see below), whose sum is σ = 35570304. Its totient is φ = 3104640.

The previous prime is 12172973. The next prime is 12172991. The reversal of 12172980 is 8927121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3031 + ... + 5790.

It is an arithmetic number, because the mean of its divisors is an integer number (741048).

Almost surely, 2^12172980 is an apocalyptic number.

12172980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12172980 is an abundant number, since it is smaller than the sum of its proper divisors (23397324).

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

12172980 is a wasteful number, since it uses less digits than its factorization.

12172980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8856 (or 8854 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 12172980 is about 3488.9797935786. The cubic root of 12172980 is about 230.0376749878.

The spelling of 12172980 in words is "twelve million, one hundred seventy-two thousand, nine hundred eighty".