13143894 has 16 divisors (see below), whose sum is σ = 26784432. Its totient is φ = 4298528.

The previous prime is 13143881. The next prime is 13143901. The reversal of 13143894 is 49834131.

13143894 is digitally balanced in base 2 and base 4, because in such bases 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, 20349 + ... + 20984.

It is an arithmetic number, because the mean of its divisors is an integer number (1674027).

Almost surely, 2^13143894 is an apocalyptic number.

13143894 is an abundant number, since it is smaller than the sum of its proper divisors (13640538).

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

13143894 is a wasteful number, since it uses less digits than its factorization.

13143894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41391.

The product of its digits is 10368, while the sum is 33.

The square root of 13143894 is about 3625.4508685128. The cubic root of 13143894 is about 235.9978334571.

The spelling of 13143894 in words is "thirteen million, one hundred forty-three thousand, eight hundred ninety-four".