12777172 has 6 divisors (see below), whose sum is σ = 22360058. Its totient is φ = 6388584.

The previous prime is 12777161. The next prime is 12777181. The reversal of 12777172 is 27177721.

It can be written as a sum of positive squares in only one way, i.e., 12702096 + 75076 = 3564^2 + 274^2 .

It is a super-2 number, since 2×12777172² = 326512248635168, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 1597143 + ... + 1597150.

Almost surely, 2^12777172 is an apocalyptic number.

It is an amenable number.

12777172 is a deficient number, since it is larger than the sum of its proper divisors (9582886).

12777172 is a wasteful number, since it uses less digits than its factorization.

12777172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3194297 (or 3194295 counting only the distinct ones).

The product of its digits is 9604, while the sum is 34.

The square root of 12777172 is about 3574.5170303133. The cubic root of 12777172 is about 233.7822748956.

The spelling of 12777172 in words is "twelve million, seven hundred seventy-seven thousand, one hundred seventy-two".