12977976 has 96 divisors (see below), whose sum is σ = 36867600. Its totient is φ = 3801600.

The previous prime is 12977971. The next prime is 12977989. The reversal of 12977976 is 67977921.

It is a super-2 number, since 2×12977976² = 336855722113152, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12977971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119010 + ... + 119118.

Almost surely, 2^12977976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12977976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18433800).

12977976 is an abundant number, since it is smaller than the sum of its proper divisors (23889624).

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

12977976 is a wasteful number, since it uses less digits than its factorization.

12977976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 166 counting only the distinct ones).

The product of its digits is 333396, while the sum is 48.

The square root of 12977976 is about 3602.4958015243. The cubic root of 12977976 is about 235.0006096257. Note that the first 3 decimals are identical.

Subtracting 12977976 from its reverse (67977921), we obtain a palindrome (54999945).

The spelling of 12977976 in words is "twelve million, nine hundred seventy-seven thousand, nine hundred seventy-six".