12812260 has 12 divisors (see below), whose sum is σ = 26905788. Its totient is φ = 5124896.

The previous prime is 12812243. The next prime is 12812291. The reversal of 12812260 is 6221821.

It can be written as a sum of positive squares in 2 ways, for example, as 6340324 + 6471936 = 2518^2 + 2544^2 .

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, 320287 + ... + 320326.

It is an arithmetic number, because the mean of its divisors is an integer number (2242149).

Almost surely, 2^12812260 is an apocalyptic number.

12812260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12812260 is an abundant number, since it is smaller than the sum of its proper divisors (14093528).

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

12812260 is a wasteful number, since it uses less digits than its factorization.

12812260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640622 (or 640620 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 12812260 is about 3579.4217410079. The cubic root of 12812260 is about 233.9960795116.

The spelling of 12812260 in words is "twelve million, eight hundred twelve thousand, two hundred sixty".