12529280 has 32 divisors (see below), whose sum is σ = 29954340. Its totient is φ = 5011456.

The previous prime is 12529271. The next prime is 12529291. The reversal of 12529280 is 8292521.

12529280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11999296 + 529984 = 3464^2 + 728^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9149 + ... + 10428.

Almost surely, 2^12529280 is an apocalyptic number.

12529280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12529280 is an abundant number, since it is smaller than the sum of its proper divisors (17425060).

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

12529280 is an equidigital number, since it uses as much as digits as its factorization.

12529280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19596 (or 19584 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 12529280 is about 3539.6723012166. The cubic root of 12529280 is about 232.2605080056.

The spelling of 12529280 in words is "twelve million, five hundred twenty-nine thousand, two hundred eighty".