20336013 has 6 divisors (see below), whose sum is σ = 29374254. Its totient is φ = 13557336.

The previous prime is 20335999. The next prime is 20336027. The reversal of 20336013 is 31063302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20335999) and next prime (20336027).

It can be written as a sum of positive squares in only one way, i.e., 19954089 + 381924 = 4467^2 + 618^2 .

It is not a de Polignac number, because 20336013 - 2⁵ = 20335981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20336083) 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 5 ways as a sum of consecutive naturals, for example, 1129770 + ... + 1129787.

It is an arithmetic number, because the mean of its divisors is an integer number (4895709).

Almost surely, 2^20336013 is an apocalyptic number.

It is an amenable number.

20336013 is a deficient number, since it is larger than the sum of its proper divisors (9038241).

20336013 is a wasteful number, since it uses less digits than its factorization.

20336013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259563 (or 2259560 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 20336013 is about 4509.5468730239. The cubic root of 20336013 is about 272.9534598441.

Adding to 20336013 its reverse (31063302), we get a palindrome (51399315).

The spelling of 20336013 in words is "twenty million, three hundred thirty-six thousand, thirteen".