13871040 has 56 divisors (see below), whose sum is σ = 44043600. Its totient is φ = 3698688.

The previous prime is 13871023. The next prime is 13871051. The reversal of 13871040 is 4017831.

13871040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 13871040.

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, 6265 + ... + 8184.

Almost surely, 2^13871040 is an apocalyptic number.

13871040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13871040 is an abundant number, since it is smaller than the sum of its proper divisors (30172560).

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

13871040 is a wasteful number, since it uses less digits than its factorization.

13871040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14469 (or 14459 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 13871040 is about 3724.3845129095. The cubic root of 13871040 is about 240.2719140340.

Adding to 13871040 its reverse (4017831), we get a palindrome (17888871).

The spelling of 13871040 in words is "thirteen million, eight hundred seventy-one thousand, forty".