13871836 has 12 divisors (see below), whose sum is σ = 26482680. Its totient is φ = 6305360.

The previous prime is 13871761. The next prime is 13871839. The reversal of 13871836 is 63817831.

It is a junction number, because it is equal to n+sod(n) for n = 13871795 and 13871804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13871839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157591 + ... + 157678.

It is an arithmetic number, because the mean of its divisors is an integer number (2206890).

Almost surely, 2^13871836 is an apocalyptic number.

It is an amenable number.

13871836 is a deficient number, since it is larger than the sum of its proper divisors (12610844).

13871836 is a wasteful number, since it uses less digits than its factorization.

13871836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315284 (or 315282 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 13871836 is about 3724.4913746712. The cubic root of 13871836 is about 240.2765100073.

It can be divided in two parts, 1387 and 1836, that added together give a palindrome (3223).

The spelling of 13871836 in words is "thirteen million, eight hundred seventy-one thousand, eight hundred thirty-six".