12811386 has 16 divisors (see below), whose sum is σ = 29283264. Its totient is φ = 3660384.

The previous prime is 12811373. The next prime is 12811397. The reversal of 12811386 is 68311821.

It is a super-2 number, since 2×12811386² = 328263222481992, which contains 22 as substring.

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, 152475 + ... + 152558.

It is an arithmetic number, because the mean of its divisors is an integer number (1830204).

Almost surely, 2^12811386 is an apocalyptic number.

12811386 is an abundant number, since it is smaller than the sum of its proper divisors (16471878).

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

12811386 is a wasteful number, since it uses less digits than its factorization.

12811386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305045.

The product of its digits is 2304, while the sum is 30.

The square root of 12811386 is about 3579.2996521666. The cubic root of 12811386 is about 233.9907586386.

The spelling of 12811386 in words is "twelve million, eight hundred eleven thousand, three hundred eighty-six".