12972776 has 8 divisors (see below), whose sum is σ = 24323970. Its totient is φ = 6486384.

The previous prime is 12972737. The next prime is 12972781. The reversal of 12972776 is 67727921.

It can be written as a sum of positive squares in only one way, i.e., 7562500 + 5410276 = 2750^2 + 2326^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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, 810791 + ... + 810806.

Almost surely, 2^12972776 is an apocalyptic number.

It is an amenable number.

12972776 is a deficient number, since it is larger than the sum of its proper divisors (11351194).

12972776 is a wasteful number, since it uses less digits than its factorization.

12972776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621603 (or 1621599 counting only the distinct ones).

The product of its digits is 74088, while the sum is 41.

The square root of 12972776 is about 3601.7740073469. The cubic root of 12972776 is about 234.9692188445.

The spelling of 12972776 in words is "twelve million, nine hundred seventy-two thousand, seven hundred seventy-six".