13887240 has 32 divisors (see below), whose sum is σ = 41662080. Its totient is φ = 3703232.

The previous prime is 13887227. The next prime is 13887241. The reversal of 13887240 is 4278831.

13887240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13887241) 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, 57744 + ... + 57983.

It is an arithmetic number, because the mean of its divisors is an integer number (1301940).

Almost surely, 2^13887240 is an apocalyptic number.

13887240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13887240 is an abundant number, since it is smaller than the sum of its proper divisors (27774840).

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

13887240 is a wasteful number, since it uses less digits than its factorization.

13887240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115741 (or 115737 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 13887240 is about 3726.5587342748. The cubic root of 13887240 is about 240.3654155709.

It can be divided in two parts, 138 and 87240, that added together give a palindrome (87378).

The spelling of 13887240 in words is "thirteen million, eight hundred eighty-seven thousand, two hundred forty".