12810855 has 16 divisors (see below), whose sum is σ = 20551680. Its totient is φ = 6814368.

The previous prime is 12810829. The next prime is 12810857. The reversal of 12810855 is 55801821.

It is not a de Polignac number, because 12810855 - 2⁷ = 12810727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12810857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6294 + ... + 8076.

It is an arithmetic number, because the mean of its divisors is an integer number (1284480).

Almost surely, 2^12810855 is an apocalyptic number.

12810855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12810855 is a deficient number, since it is larger than the sum of its proper divisors (7740825).

12810855 is a wasteful number, since it uses less digits than its factorization.

12810855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270.

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 12810855 is about 3579.2254748758. The cubic root of 12810855 is about 233.9875258161.

The spelling of 12810855 in words is "twelve million, eight hundred ten thousand, eight hundred fifty-five".