13887018 has 32 divisors (see below), whose sum is σ = 31022400. Its totient is φ = 4604688.

The previous prime is 13887001. The next prime is 13887019. The reversal of 13887018 is 81078831.

It is not an unprimeable number, because it can be changed into a prime (13887019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11805 + ... + 12927.

It is an arithmetic number, because the mean of its divisors is an integer number (969450).

Almost surely, 2^13887018 is an apocalyptic number.

13887018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13887018 is an abundant number, since it is smaller than the sum of its proper divisors (17135382).

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

13887018 is a wasteful number, since it uses less digits than its factorization.

13887018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363 (or 1357 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 13887018 is about 3726.5289479622. The cubic root of 13887018 is about 240.3641347451.

The spelling of 13887018 in words is "thirteen million, eight hundred eighty-seven thousand, eighteen".