20356133 has 8 divisors (see below), whose sum is σ = 23432640. Its totient is φ = 17321760.

The previous prime is 20356117. The next prime is 20356139. The reversal of 20356133 is 33165302.

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 20356133 - 2⁴ = 20356117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20356099 and 20356108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20356139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9488 + ... + 11433.

It is an arithmetic number, because the mean of its divisors is an integer number (2929080).

Almost surely, 2^20356133 is an apocalyptic number.

It is an amenable number.

20356133 is a deficient number, since it is larger than the sum of its proper divisors (3076507).

20356133 is a wasteful number, since it uses less digits than its factorization.

20356133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21067.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 20356133 is about 4511.7771443191. Note that the first 3 decimals coincide. The cubic root of 20356133 is about 273.0434482052.

The spelling of 20356133 in words is "twenty million, three hundred fifty-six thousand, one hundred thirty-three".