12806280 has 48 divisors (see below), whose sum is σ = 41621580. Its totient is φ = 3414912.

The previous prime is 12806273. The next prime is 12806327. The reversal of 12806280 is 8260821.

It can be written as a sum of positive squares in 2 ways, for example, as 11985444 + 820836 = 3462^2 + 906^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17427 + ... + 18146.

Almost surely, 2^12806280 is an apocalyptic number.

12806280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12806280 is an abundant number, since it is smaller than the sum of its proper divisors (28815300).

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

12806280 is a wasteful number, since it uses less digits than its factorization.

12806280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35590 (or 35583 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 12806280 is about 3578.5863130572. The cubic root of 12806280 is about 233.9596687010.

The spelling of 12806280 in words is "twelve million, eight hundred six thousand, two hundred eighty".