12811612 has 12 divisors (see below), whose sum is σ = 24458616. Its totient is φ = 5823440.

The previous prime is 12811607. The next prime is 12811661. The reversal of 12811612 is 21611821.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

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, 145543 + ... + 145630.

It is an arithmetic number, because the mean of its divisors is an integer number (2038218).

Almost surely, 2^12811612 is an apocalyptic number.

It is an amenable number.

12811612 is a deficient number, since it is larger than the sum of its proper divisors (11647004).

12811612 is a wasteful number, since it uses less digits than its factorization.

12811612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291188 (or 291186 counting only the distinct ones).

The product of its digits is 192, while the sum is 22.

The square root of 12811612 is about 3579.3312224492. The cubic root of 12811612 is about 233.9921345397.

The spelling of 12811612 in words is "twelve million, eight hundred eleven thousand, six hundred twelve".