13333638 has 8 divisors (see below), whose sum is σ = 26667288. Its totient is φ = 4444544.

The previous prime is 13333633. The next prime is 13333657. The reversal of 13333638 is 83633331.

13333638 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

13333638 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13333633) 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, 1111131 + ... + 1111142.

It is an arithmetic number, because the mean of its divisors is an integer number (3333411).

Almost surely, 2^13333638 is an apocalyptic number.

13333638 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.

13333638 is a wasteful number, since it uses less digits than its factorization.

13333638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222278.

The product of its digits is 11664, while the sum is 30.

The square root of 13333638 is about 3651.5254346643. The cubic root of 13333638 is about 237.1280263970.

Adding to 13333638 its reverse (83633331), we get a palindrome (96966969).

The spelling of 13333638 in words is "thirteen million, three hundred thirty-three thousand, six hundred thirty-eight".