13828638 has 8 divisors (see below), whose sum is σ = 27657288. Its totient is φ = 4609544.

The previous prime is 13828631. The next prime is 13828651. The reversal of 13828638 is 83682831.

It is a sphenic number, since it is the product of 3 distinct primes.

13828638 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 13828596 and 13828605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13828631) 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, 1152381 + ... + 1152392.

It is an arithmetic number, because the mean of its divisors is an integer number (3457161).

Almost surely, 2^13828638 is an apocalyptic number.

13828638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13828638 is a wasteful number, since it uses less digits than its factorization.

13828638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304778.

The product of its digits is 55296, while the sum is 39.

The square root of 13828638 is about 3718.6876717466. The cubic root of 13828638 is about 240.0268372767.

The spelling of 13828638 in words is "thirteen million, eight hundred twenty-eight thousand, six hundred thirty-eight".