13888888 has 32 divisors (see below), whose sum is σ = 28400400. Its totient is φ = 6329088.

The previous prime is 13888879. The next prime is 13888933. The reversal of 13888888 is 88888831.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a plaindrome in base 10.

It is a congruent number.

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, 7828 + ... + 9436.

Almost surely, 2^13888888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13888888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14200200).

13888888 is an abundant number, since it is smaller than the sum of its proper divisors (14511512).

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

13888888 is a wasteful number, since it uses less digits than its factorization.

13888888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711 (or 1707 counting only the distinct ones).

The product of its digits is 786432, while the sum is 52.

The square root of 13888888 is about 3726.7798432427. The cubic root of 13888888 is about 240.3749232566.

The spelling of 13888888 in words is "thirteen million, eight hundred eighty-eight thousand, eight hundred eighty-eight".