12721180 has 12 divisors (see below), whose sum is σ = 26714520. Its totient is φ = 5088464.

The previous prime is 12721171. The next prime is 12721183. The reversal of 12721180 is 8112721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12721183) 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, 318010 + ... + 318049.

It is an arithmetic number, because the mean of its divisors is an integer number (2226210).

Almost surely, 2^12721180 is an apocalyptic number.

12721180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12721180 is an abundant number, since it is smaller than the sum of its proper divisors (13993340).

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

12721180 is a wasteful number, since it uses less digits than its factorization.

12721180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636068 (or 636066 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 12721180 is about 3566.6763239745. The cubic root of 12721180 is about 233.4402820382.

The spelling of 12721180 in words is "twelve million, seven hundred twenty-one thousand, one hundred eighty".