13870140 has 24 divisors (see below), whose sum is σ = 38836560. Its totient is φ = 3698688.

The previous prime is 13870121. The next prime is 13870151. The reversal of 13870140 is 4107831.

13870140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 13870140.

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, 115525 + ... + 115644.

It is an arithmetic number, because the mean of its divisors is an integer number (1618190).

Almost surely, 2^13870140 is an apocalyptic number.

13870140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13870140 is an abundant number, since it is smaller than the sum of its proper divisors (24966420).

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

13870140 is a wasteful number, since it uses less digits than its factorization.

13870140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231181 (or 231179 counting only the distinct ones).

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

The square root of 13870140 is about 3724.2636856163. The cubic root of 13870140 is about 240.2667173701.

Adding to 13870140 its reverse (4107831), we get a palindrome (17977971).

The spelling of 13870140 in words is "thirteen million, eight hundred seventy thousand, one hundred forty".