13831864 has 8 divisors (see below), whose sum is σ = 25934760. Its totient is φ = 6915928.

The previous prime is 13831861. The next prime is 13831871. The reversal of 13831864 is 46813831.

13831864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13831861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 864484 + ... + 864499.

It is an arithmetic number, because the mean of its divisors is an integer number (3241845).

Almost surely, 2^13831864 is an apocalyptic number.

It is an amenable number.

13831864 is a deficient number, since it is larger than the sum of its proper divisors (12102896).

13831864 is a wasteful number, since it uses less digits than its factorization.

13831864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728989 (or 1728985 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 13831864 is about 3719.1214016216. The cubic root of 13831864 is about 240.0455006324.

The spelling of 13831864 in words is "thirteen million, eight hundred thirty-one thousand, eight hundred sixty-four".