12518280 has 128 divisors (see below), whose sum is σ = 42595200. Its totient is φ = 3269376.

The previous prime is 12518267. The next prime is 12518287. The reversal of 12518280 is 8281521.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12518287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72274 + ... + 72446.

It is an arithmetic number, because the mean of its divisors is an integer number (332775).

Almost surely, 2^12518280 is an apocalyptic number.

12518280 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 12518280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21297600).

12518280 is an abundant number, since it is smaller than the sum of its proper divisors (30076920).

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

12518280 is a wasteful number, since it uses less digits than its factorization.

12518280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 12518280 is about 3538.1181438725. The cubic root of 12518280 is about 232.1925175697.

The spelling of 12518280 in words is "twelve million, five hundred eighteen thousand, two hundred eighty".