12685280 has 24 divisors (see below), whose sum is σ = 29969352. Its totient is φ = 5074048.

The previous prime is 12685273. The next prime is 12685291. The reversal of 12685280 is 8258621.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 39482 + ... + 39801.

It is an arithmetic number, because the mean of its divisors is an integer number (1248723).

Almost surely, 2^12685280 is an apocalyptic number.

12685280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12685280 is an abundant number, since it is smaller than the sum of its proper divisors (17284072).

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

12685280 is an equidigital number, since it uses as much as digits as its factorization.

12685280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79298 (or 79290 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 12685280 is about 3561.6400716524. The cubic root of 12685280 is about 233.2204805744.

The spelling of 12685280 in words is "twelve million, six hundred eighty-five thousand, two hundred eighty".