13020005 has 8 divisors (see below), whose sum is σ = 15654552. Its totient is φ = 10395648.

The previous prime is 13019999. The next prime is 13020017. The reversal of 13020005 is 50002031.

It can be written as a sum of positive squares in 4 ways, for example, as 1069156 + 11950849 = 1034^2 + 3457^2 .

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 13020005 - 2⁴ = 13019989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 629 + ... + 5141.

It is an arithmetic number, because the mean of its divisors is an integer number (1956819).

Almost surely, 2^13020005 is an apocalyptic number.

It is an amenable number.

13020005 is a deficient number, since it is larger than the sum of its proper divisors (2634547).

13020005 is an equidigital number, since it uses as much as digits as its factorization.

13020005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5095.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 13020005 is about 3608.3244033762. The cubic root of 13020005 is about 235.2540183688.

Adding to 13020005 its reverse (50002031), we get a palindrome (63022036).

The spelling of 13020005 in words is "thirteen million, twenty thousand, five".