20328793 has 2 divisors, whose sum is σ = 20328794. Its totient is φ = 20328792.

The previous prime is 20328779. The next prime is 20328811. The reversal of 20328793 is 39782302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13816089 + 6512704 = 3717^2 + 2552^2 .

It is a cyclic number.

It is not a de Polignac number, because 20328793 - 2¹⁷ = 20197721 is a prime.

It is not a weakly prime, because it can be changed into another prime (20328713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10164396 + 10164397.

It is an arithmetic number, because the mean of its divisors is an integer number (10164397).

Almost surely, 2^20328793 is an apocalyptic number.

It is an amenable number.

20328793 is a deficient number, since it is larger than the sum of its proper divisors (1).

20328793 is an equidigital number, since it uses as much as digits as its factorization.

20328793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 20328793 is about 4508.7462780689. The cubic root of 20328793 is about 272.9211533270.

The spelling of 20328793 in words is "twenty million, three hundred twenty-eight thousand, seven hundred ninety-three".