12785280 has 64 divisors (see below), whose sum is σ = 40759200. Its totient is φ = 3408896.

The previous prime is 12785273. The next prime is 12785303. The reversal of 12785280 is 8258721.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1410 + ... + 5249.

Almost surely, 2^12785280 is an apocalyptic number.

12785280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12785280 is an abundant number, since it is smaller than the sum of its proper divisors (27973920).

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

12785280 is an equidigital number, since it uses as much as digits as its factorization.

12785280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6681 (or 6669 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 12785280 is about 3575.6509896801. The cubic root of 12785280 is about 233.8317147843.

The spelling of 12785280 in words is "twelve million, seven hundred eighty-five thousand, two hundred eighty".