12528280 has 16 divisors (see below), whose sum is σ = 28188720. Its totient is φ = 5011296.

The previous prime is 12528259. The next prime is 12528281. The reversal of 12528280 is 8282521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12528281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156564 + ... + 156643.

It is an arithmetic number, because the mean of its divisors is an integer number (1761795).

Almost surely, 2^12528280 is an apocalyptic number.

12528280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12528280 is an abundant number, since it is smaller than the sum of its proper divisors (15660440).

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

12528280 is a wasteful number, since it uses less digits than its factorization.

12528280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313218 (or 313214 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 12528280 is about 3539.5310423840. The cubic root of 12528280 is about 232.2543287017.

The spelling of 12528280 in words is "twelve million, five hundred twenty-eight thousand, two hundred eighty".