13873278 has 32 divisors (see below), whose sum is σ = 29145600. Its totient is φ = 4394016.

The previous prime is 13873271. The next prime is 13873283. The reversal of 13873278 is 87237831.

13873278 is a nontrivial binomial coefficient, being equal to C(5268, 2).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13873271) 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, 31383 + ... + 31821.

It is an arithmetic number, because the mean of its divisors is an integer number (910800).

Almost surely, 2^13873278 is an apocalyptic number.

13873278 is the 5267-th triangular number and also the 2634-th hexagonal number.

13873278 is an abundant number, since it is smaller than the sum of its proper divisors (15272322).

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

13873278 is a wasteful number, since it uses less digits than its factorization.

13873278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696.

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

The square root of 13873278 is about 3724.6849531202. The cubic root of 13873278 is about 240.2848354306.

The spelling of 13873278 in words is "thirteen million, eight hundred seventy-three thousand, two hundred seventy-eight".