12811898 has 16 divisors (see below), whose sum is σ = 21081600. Its totient is φ = 5791200.

The previous prime is 12811889. The next prime is 12811907. The reversal of 12811898 is 89811821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12811889) and next prime (12811907).

It is a Curzon number.

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, 2678 + ... + 5726.

It is an arithmetic number, because the mean of its divisors is an integer number (1317600).

Almost surely, 2^12811898 is an apocalyptic number.

12811898 is a deficient number, since it is larger than the sum of its proper divisors (8269702).

12811898 is a wasteful number, since it uses less digits than its factorization.

12811898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3253.

The product of its digits is 9216, while the sum is 38.

The square root of 12811898 is about 3579.3711738237. The cubic root of 12811898 is about 233.9938757011.

The spelling of 12811898 in words is "twelve million, eight hundred eleven thousand, eight hundred ninety-eight".