12516280 has 32 divisors (see below), whose sum is σ = 32185440. Its totient is φ = 4291200.

The previous prime is 12516277. The next prime is 12516289. The reversal of 12516280 is 8261521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12516289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22071 + ... + 22630.

It is an arithmetic number, because the mean of its divisors is an integer number (1005795).

Almost surely, 2^12516280 is an apocalyptic number.

12516280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12516280 is an abundant number, since it is smaller than the sum of its proper divisors (19669160).

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

12516280 is a wasteful number, since it uses less digits than its factorization.

12516280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44719 (or 44715 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 12516280 is about 3537.8354964583. The cubic root of 12516280 is about 232.1801513935.

The spelling of 12516280 in words is "twelve million, five hundred sixteen thousand, two hundred eighty".