13870115 has 16 divisors (see below), whose sum is σ = 19165440. Its totient is φ = 9439200.

The previous prime is 13870111. The next prime is 13870121. The reversal of 13870115 is 51107831.

It is not a de Polignac number, because 13870115 - 2² = 13870111 is a prime.

It is a super-2 number, since 2×13870115² = 384760180226450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13870111) 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 15 ways as a sum of consecutive naturals, for example, 3440 + ... + 6290.

It is an arithmetic number, because the mean of its divisors is an integer number (1197840).

Almost surely, 2^13870115 is an apocalyptic number.

13870115 is a deficient number, since it is larger than the sum of its proper divisors (5295325).

13870115 is a wasteful number, since it uses less digits than its factorization.

13870115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 13870115 is about 3724.2603292466. The cubic root of 13870115 is about 240.2665730151.

Adding to 13870115 its reverse (51107831), we get a palindrome (64977946).

The spelling of 13870115 in words is "thirteen million, eight hundred seventy thousand, one hundred fifteen".