12539680 has 48 divisors (see below), whose sum is σ = 29857464. Its totient is φ = 4976640.

The previous prime is 12539663. The next prime is 12539701. The reversal of 12539680 is 8693521.

It can be written as a sum of positive squares in 4 ways, for example, as 3370896 + 9168784 = 1836^2 + 3028^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 28744 + ... + 29176.

Almost surely, 2^12539680 is an apocalyptic number.

12539680 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 12539680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14928732).

12539680 is an abundant number, since it is smaller than the sum of its proper divisors (17317784).

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

12539680 is a wasteful number, since it uses less digits than its factorization.

12539680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 621 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 12539680 is about 3541.1410590373. The cubic root of 12539680 is about 232.3247532843.

The spelling of 12539680 in words is "twelve million, five hundred thirty-nine thousand, six hundred eighty".