13671878 has 16 divisors (see below), whose sum is σ = 22681296. Its totient is φ = 6128640.

The previous prime is 13671863. The next prime is 13671881. The reversal of 13671878 is 87817631.

13671878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2651 + ... + 5862.

It is an arithmetic number, because the mean of its divisors is an integer number (1417581).

Almost surely, 2^13671878 is an apocalyptic number.

13671878 is a deficient number, since it is larger than the sum of its proper divisors (9009418).

13671878 is a wasteful number, since it uses less digits than its factorization.

13671878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8599.

The product of its digits is 56448, while the sum is 41.

The square root of 13671878 is about 3697.5502701113. The cubic root of 13671878 is about 239.1164153362.

Subtracting 13671878 from its reverse (87817631), we obtain a triangular number (74145753 = T₁₂₁₇₇).

The spelling of 13671878 in words is "thirteen million, six hundred seventy-one thousand, eight hundred seventy-eight".