13872986 has 16 divisors (see below), whose sum is σ = 22398120. Its totient is φ = 6420480.

The previous prime is 13872977. The next prime is 13872997. The reversal of 13872986 is 68927831.

It can be written as a sum of positive squares in 4 ways, for example, as 12117361 + 1755625 = 3481^2 + 1325^2 .

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, 1271 + ... + 5418.

Almost surely, 2^13872986 is an apocalyptic number.

13872986 is a deficient number, since it is larger than the sum of its proper divisors (8525134).

13872986 is a wasteful number, since it uses less digits than its factorization.

13872986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6769.

The product of its digits is 145152, while the sum is 44.

The square root of 13872986 is about 3724.6457549678. The cubic root of 13872986 is about 240.2831496078.

The spelling of 13872986 in words is "thirteen million, eight hundred seventy-two thousand, nine hundred eighty-six".