12977288 has 16 divisors (see below), whose sum is σ = 24574860. Its totient is φ = 6424000.

The previous prime is 12977287. The next prime is 12977291. The reversal of 12977288 is 88277921.

It can be written as a sum of positive squares in 2 ways, for example, as 12945604 + 31684 = 3598^2 + 178^2 .

It is not an unprimeable number, because it can be changed into a prime (12977287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7223 + ... + 8838.

Almost surely, 2^12977288 is an apocalyptic number.

It is an amenable number.

12977288 is a deficient number, since it is larger than the sum of its proper divisors (11597572).

12977288 is a wasteful number, since it uses less digits than its factorization.

12977288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16168 (or 16164 counting only the distinct ones).

The product of its digits is 112896, while the sum is 44.

The square root of 12977288 is about 3602.4003109038. The cubic root of 12977288 is about 234.9964568652.

The spelling of 12977288 in words is "twelve million, nine hundred seventy-seven thousand, two hundred eighty-eight".