13388868 has 48 divisors (see below), whose sum is σ = 34984320. Its totient is φ = 4428000.

The previous prime is 13388839. The next prime is 13388887. The reversal of 13388868 is 86888331.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15898 + ... + 16718.

It is an arithmetic number, because the mean of its divisors is an integer number (728840).

Almost surely, 2^13388868 is an apocalyptic number.

13388868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13388868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17492160).

13388868 is an abundant number, since it is smaller than the sum of its proper divisors (21595452).

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

13388868 is a wasteful number, since it uses less digits than its factorization.

13388868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985 (or 977 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 13388868 is about 3659.0802122938. The cubic root of 13388868 is about 237.4549824186.

It can be divided in two parts, 133888 and 68, that added together give a square (133956 = 366²).

The spelling of 13388868 in words is "thirteen million, three hundred eighty-eight thousand, eight hundred sixty-eight".