13871145 has 8 divisors (see below), whose sum is σ = 22193856. Its totient is φ = 7397936.

The previous prime is 13871141. The next prime is 13871147. The reversal of 13871145 is 54117831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13871145 - 2² = 13871141 is a prime.

It is a super-2 number, since 2×13871145² = 384817327222050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13871141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462357 + ... + 462386.

It is an arithmetic number, because the mean of its divisors is an integer number (2774232).

Almost surely, 2^13871145 is an apocalyptic number.

13871145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13871145 is a deficient number, since it is larger than the sum of its proper divisors (8322711).

13871145 is an equidigital number, since it uses as much as digits as its factorization.

13871145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924751.

The product of its digits is 3360, while the sum is 30.

The square root of 13871145 is about 3724.3986091717. The cubic root of 13871145 is about 240.2725202969.

Adding to 13871145 its reverse (54117831), we get a palindrome (67988976).

The spelling of 13871145 in words is "thirteen million, eight hundred seventy-one thousand, one hundred forty-five".