13871507 has 16 divisors (see below), whose sum is σ = 16511040. Its totient is φ = 11523072.

The previous prime is 13871503. The next prime is 13871513. The reversal of 13871507 is 70517831.

It is a cyclic number.

It is not a de Polignac number, because 13871507 - 2² = 13871503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13871503) 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, 3719 + ... + 6447.

It is an arithmetic number, because the mean of its divisors is an integer number (1031940).

Almost surely, 2^13871507 is an apocalyptic number.

13871507 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13871507 is a deficient number, since it is larger than the sum of its proper divisors (2639533).

13871507 is a wasteful number, since it uses less digits than its factorization.

13871507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 13871507 is about 3724.4472073047. The cubic root of 13871507 is about 240.2746104366.

The spelling of 13871507 in words is "thirteen million, eight hundred seventy-one thousand, five hundred seven".