20326133 has 4 divisors (see below), whose sum is σ = 20462700. Its totient is φ = 20189568.

The previous prime is 20326099. The next prime is 20326157. The reversal of 20326133 is 33162302.

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 12802084 + 7524049 = 3578^2 + 2743^2 .

It is a cyclic number.

It is not a de Polignac number, because 20326133 - 2⁶ = 20326069 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 (20326183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68060 + ... + 68357.

It is an arithmetic number, because the mean of its divisors is an integer number (5115675).

Almost surely, 2^20326133 is an apocalyptic number.

It is an amenable number.

20326133 is a deficient number, since it is larger than the sum of its proper divisors (136567).

20326133 is a wasteful number, since it uses less digits than its factorization.

20326133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136566.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 20326133 is about 4508.4512861957. The cubic root of 20326133 is about 272.9092489978.

Adding to 20326133 its reverse (33162302), we get a palindrome (53488435).

The spelling of 20326133 in words is "twenty million, three hundred twenty-six thousand, one hundred thirty-three".