13720115 has 8 divisors (see below), whose sum is σ = 16624608. Its totient is φ = 10869120.

The previous prime is 13720061. The next prime is 13720127. The reversal of 13720115 is 51102731.

13720115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13720115 - 2¹⁸ = 13457971 is a prime.

It is a super-2 number, since 2×13720115² = 376483111226450, which contains 22 as substring.

It is a Duffinian 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, 12806 + ... + 13835.

It is an arithmetic number, because the mean of its divisors is an integer number (2078076).

Almost surely, 2^13720115 is an apocalyptic number.

13720115 is a deficient number, since it is larger than the sum of its proper divisors (2904493).

13720115 is a wasteful number, since it uses less digits than its factorization.

13720115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26749.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 13720115 is about 3704.0673589988. The cubic root of 13720115 is about 239.3973014010.

Adding to 13720115 its reverse (51102731), we get a palindrome (64822846).

The spelling of 13720115 in words is "thirteen million, seven hundred twenty thousand, one hundred fifteen".