13015873 has 6 divisors (see below), whose sum is σ = 14094294. Its totient is φ = 12014496.

The previous prime is 13015837. The next prime is 13015921. The reversal of 13015873 is 37851031.

It can be written as a sum of positive squares in 3 ways, for example, as 1065024 + 11950849 = 1032^2 + 3457^2 .

It is not a de Polignac number, because 13015873 - 2¹³ = 13007681 is a prime.

It is a Duffinian number.

13015873 is a modest number, since divided by 15873 gives 13 as remainder.

It is not an unprimeable number, because it can be changed into a prime (13015073) 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 5 ways as a sum of consecutive naturals, for example, 38340 + ... + 38677.

It is an arithmetic number, because the mean of its divisors is an integer number (2349049).

Almost surely, 2^13015873 is an apocalyptic number.

13015873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13015873 is a deficient number, since it is larger than the sum of its proper divisors (1078421).

13015873 is an equidigital number, since it uses as much as digits as its factorization.

13015873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77043 (or 77030 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 13015873 is about 3607.7517930146. The cubic root of 13015873 is about 235.2291291706.

The spelling of 13015873 in words is "thirteen million, fifteen thousand, eight hundred seventy-three".