20136933 has 12 divisors (see below), whose sum is σ = 30090060. Its totient is φ = 12961536.

The previous prime is 20136913. The next prime is 20136953. The reversal of 20136933 is 33963102.

It is an interprime number because it is at equal distance from previous prime (20136913) and next prime (20136953).

It can be written as a sum of positive squares in 2 ways, for example, as 12830724 + 7306209 = 3582^2 + 2703^2 .

It is not a de Polignac number, because 20136933 - 2⁹ = 20136421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20136897 and 20136906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20136913) 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 11 ways as a sum of consecutive naturals, for example, 38316 + ... + 38837.

It is an arithmetic number, because the mean of its divisors is an integer number (2507505).

Almost surely, 2^20136933 is an apocalyptic number.

It is an amenable number.

20136933 is a deficient number, since it is larger than the sum of its proper divisors (9953127).

20136933 is a wasteful number, since it uses less digits than its factorization.

20136933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77188 (or 77185 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 20136933 is about 4487.4194143182. The cubic root of 20136933 is about 272.0598421173.

The spelling of 20136933 in words is "twenty million, one hundred thirty-six thousand, nine hundred thirty-three".