12977415 has 48 divisors (see below), whose sum is σ = 25474176. Its totient is φ = 6285600.

The previous prime is 12977411. The next prime is 12977441. The reversal of 12977415 is 51477921.

It is a happy number.

It is not a de Polignac number, because 12977415 - 2² = 12977411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12977415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12977411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12880 + ... + 13850.

It is an arithmetic number, because the mean of its divisors is an integer number (530712).

Almost surely, 2^12977415 is an apocalyptic number.

12977415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12977415 is a deficient number, since it is larger than the sum of its proper divisors (12496761).

12977415 is an equidigital number, since it uses as much as digits as its factorization.

12977415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002 (or 990 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 12977415 is about 3602.4179379966. The cubic root of 12977415 is about 234.9972234469.

The spelling of 12977415 in words is "twelve million, nine hundred seventy-seven thousand, four hundred fifteen".