20002013 has 4 divisors (see below), whose sum is σ = 21178620. Its totient is φ = 18825408.

The previous prime is 20002007. The next prime is 20002027. The reversal of 20002013 is 31020002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8421604 + 11580409 = 2902^2 + 3403^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002013 - 2¹⁸ = 19739869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002313) 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 3 ways as a sum of consecutive naturals, for example, 588278 + ... + 588311.

It is an arithmetic number, because the mean of its divisors is an integer number (5294655).

Almost surely, 2^20002013 is an apocalyptic number.

It is an amenable number.

20002013 is a deficient number, since it is larger than the sum of its proper divisors (1176607).

20002013 is a wasteful number, since it uses less digits than its factorization.

20002013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176606.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 20002013 is about 4472.3610095787. The cubic root of 20002013 is about 271.4508682251.

Adding to 20002013 its reverse (31020002), we get a palindrome (51022015).

The spelling of 20002013 in words is "twenty million, two thousand, thirteen".