13886638 has 4 divisors (see below), whose sum is σ = 20829960. Its totient is φ = 6943318.

The previous prime is 13886633. The next prime is 13886657. The reversal of 13886638 is 83668831.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 13886594 and 13886603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13886633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3471658 + ... + 3471661.

It is an arithmetic number, because the mean of its divisors is an integer number (5207490).

Almost surely, 2^13886638 is an apocalyptic number.

13886638 is a deficient number, since it is larger than the sum of its proper divisors (6943322).

13886638 is an equidigital number, since it uses as much as digits as its factorization.

13886638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6943321.

The product of its digits is 165888, while the sum is 43.

The square root of 13886638 is about 3726.4779618294. The cubic root of 13886638 is about 240.3619423089.

The spelling of 13886638 in words is "thirteen million, eight hundred eighty-six thousand, six hundred thirty-eight".