13987338 has 16 divisors (see below), whose sum is σ = 28939680. Its totient is φ = 4501616.

The previous prime is 13987333. The next prime is 13987339. The reversal of 13987338 is 83378931.

13987338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 13987338.

It is not an unprimeable number, because it can be changed into a prime (13987333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40020 + ... + 40367.

It is an arithmetic number, because the mean of its divisors is an integer number (1808730).

Almost surely, 2^13987338 is an apocalyptic number.

13987338 is an abundant number, since it is smaller than the sum of its proper divisors (14952342).

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

13987338 is a wasteful number, since it uses less digits than its factorization.

13987338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80421.

The product of its digits is 108864, while the sum is 42.

The square root of 13987338 is about 3739.9649730980. The cubic root of 13987338 is about 240.9415444504.

The spelling of 13987338 in words is "thirteen million, nine hundred eighty-seven thousand, three hundred thirty-eight".