12811910 has 16 divisors (see below), whose sum is σ = 23857200. Its totient is φ = 4947936.

The previous prime is 12811907. The next prime is 12811927. The reversal of 12811910 is 1911821.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21800 + ... + 22379.

It is an arithmetic number, because the mean of its divisors is an integer number (1491075).

Almost surely, 2^12811910 is an apocalyptic number.

12811910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12811910 is a deficient number, since it is larger than the sum of its proper divisors (11045290).

12811910 is a wasteful number, since it uses less digits than its factorization.

12811910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44215.

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 12811910 is about 3579.3728500954. The cubic root of 12811910 is about 233.9939487563.

The spelling of 12811910 in words is "twelve million, eight hundred eleven thousand, nine hundred ten".