20336253 has 16 divisors (see below), whose sum is σ = 31051776. Its totient is φ = 11597040.

The previous prime is 20336237. The next prime is 20336257. The reversal of 20336253 is 35263302.

20336253 is a nontrivial binomial coefficient, being equal to C(6378, 2).

It is not a de Polignac number, because 20336253 - 2⁴ = 20336237 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20336257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18600 + ... + 19662.

It is an arithmetic number, because the mean of its divisors is an integer number (1940736).

Almost surely, 2^20336253 is an apocalyptic number.

20336253 is the 6377-th triangular number and also the 3189-th hexagonal number.

It is an amenable number.

20336253 is a deficient number, since it is larger than the sum of its proper divisors (10715523).

20336253 is a wasteful number, since it uses less digits than its factorization.

20336253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984.

The product of its (nonzero) digits is 3240, while the sum is 24.

The square root of 20336253 is about 4509.5734831578. The cubic root of 20336253 is about 272.9545336136.

Adding to 20336253 its reverse (35263302), we get a palindrome (55599555).

The spelling of 20336253 in words is "twenty million, three hundred thirty-six thousand, two hundred fifty-three".