13278378 has 32 divisors (see below), whose sum is σ = 28123200. Its totient is φ = 4167936.

The previous prime is 13278371. The next prime is 13278389. The reversal of 13278378 is 87387231.

13278378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13278371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30450 + ... + 30882.

It is an arithmetic number, because the mean of its divisors is an integer number (878850).

Almost surely, 2^13278378 is an apocalyptic number.

13278378 is an abundant number, since it is smaller than the sum of its proper divisors (14844822).

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

13278378 is a wasteful number, since it uses less digits than its factorization.

13278378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726.

The product of its digits is 56448, while the sum is 39.

The square root of 13278378 is about 3643.9508778248. The cubic root of 13278378 is about 236.7999879208.

The spelling of 13278378 in words is "thirteen million, two hundred seventy-eight thousand, three hundred seventy-eight".