13278712 has 16 divisors (see below), whose sum is σ = 24981840. Its totient is φ = 6616896.

The previous prime is 13278709. The next prime is 13278719. The reversal of 13278712 is 21787231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13278719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148 + ... + 5155.

It is an arithmetic number, because the mean of its divisors is an integer number (1561365).

Almost surely, 2^13278712 is an apocalyptic number.

It is an amenable number.

13278712 is a deficient number, since it is larger than the sum of its proper divisors (11703128).

13278712 is a wasteful number, since it uses less digits than its factorization.

13278712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5622 (or 5618 counting only the distinct ones).

The product of its digits is 4704, while the sum is 31.

The square root of 13278712 is about 3643.9967069140. The cubic root of 13278712 is about 236.8019733674.

The spelling of 13278712 in words is "thirteen million, two hundred seventy-eight thousand, seven hundred twelve".