12777396 has 12 divisors (see below), whose sum is σ = 29813952. Its totient is φ = 4259128.

The previous prime is 12777383. The next prime is 12777431. The reversal of 12777396 is 69377721.

It is a tau number, because it is divible by the number of its divisors (12).

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, 532380 + ... + 532403.

It is an arithmetic number, because the mean of its divisors is an integer number (2484496).

Almost surely, 2^12777396 is an apocalyptic number.

It is an amenable number.

12777396 is an abundant number, since it is smaller than the sum of its proper divisors (17036556).

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

12777396 is a wasteful number, since it uses less digits than its factorization.

12777396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064790 (or 1064788 counting only the distinct ones).

The product of its digits is 111132, while the sum is 42.

The square root of 12777396 is about 3574.5483630803. The cubic root of 12777396 is about 233.7836410541.

The spelling of 12777396 in words is "twelve million, seven hundred seventy-seven thousand, three hundred ninety-six".