13278976 has 18 divisors (see below), whose sum is σ = 26506592. Its totient is φ = 6639360.

The previous prime is 13278973. The next prime is 13278977. The reversal of 13278976 is 67987231.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13278971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25680 + ... + 26191.

Almost surely, 2^13278976 is an apocalyptic number.

13278976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13278976 is a deficient number, since it is larger than the sum of its proper divisors (13227616).

13278976 is an frugal number, since it uses more digits than its factorization.

13278976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51887 (or 51873 counting only the distinct ones).

The product of its digits is 127008, while the sum is 43.

The square root of 13278976 is about 3644.0329306964. The cubic root of 13278976 is about 236.8035426789.

The spelling of 13278976 in words is "thirteen million, two hundred seventy-eight thousand, nine hundred seventy-six".