12897180 has 72 divisors (see below), whose sum is σ = 39482352. Its totient is φ = 3407616.

The previous prime is 12897173. The next prime is 12897191. The reversal of 12897180 is 8179821.

12897180 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24399 + ... + 24921.

It is an arithmetic number, because the mean of its divisors is an integer number (548366).

Almost surely, 2^12897180 is an apocalyptic number.

12897180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12897180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19741176).

12897180 is an abundant number, since it is smaller than the sum of its proper divisors (26585172).

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

12897180 is a wasteful number, since it uses less digits than its factorization.

12897180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675 (or 670 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 12897180 is about 3591.2644012938. The cubic root of 12897180 is about 234.5119189314.

The spelling of 12897180 in words is "twelve million, eight hundred ninety-seven thousand, one hundred eighty".