12915880 has 64 divisors (see below), whose sum is σ = 30844800. Its totient is φ = 4857600.

The previous prime is 12915821. The next prime is 12915883. The reversal of 12915880 is 8851921.

It is not an unprimeable number, because it can be changed into a prime (12915883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92851 + ... + 92989.

It is an arithmetic number, because the mean of its divisors is an integer number (481950).

Almost surely, 2^12915880 is an apocalyptic number.

12915880 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 12915880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15422400).

12915880 is an abundant number, since it is smaller than the sum of its proper divisors (17928920).

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

12915880 is a wasteful number, since it uses less digits than its factorization.

12915880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 12915880 is about 3593.8669980955. The cubic root of 12915880 is about 234.6252061021.

The spelling of 12915880 in words is "twelve million, nine hundred fifteen thousand, eight hundred eighty".