13871236 has 6 divisors (see below), whose sum is σ = 24274670. Its totient is φ = 6935616.

The previous prime is 13871233. The next prime is 13871279. The reversal of 13871236 is 63217831.

It can be written as a sum of positive squares in only one way, i.e., 9486400 + 4384836 = 3080^2 + 2094^2 .

It is a super-2 number, since 2×13871236² = 384822376335392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13871198 and 13871207.

It is not an unprimeable number, because it can be changed into a prime (13871233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1733901 + ... + 1733908.

Almost surely, 2^13871236 is an apocalyptic number.

It is an amenable number.

13871236 is a deficient number, since it is larger than the sum of its proper divisors (10403434).

13871236 is a wasteful number, since it uses less digits than its factorization.

13871236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3467813 (or 3467811 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 13871236 is about 3724.4108258891. The cubic root of 13871236 is about 240.2730457222.

The spelling of 13871236 in words is "thirteen million, eight hundred seventy-one thousand, two hundred thirty-six".