23820539 has 2 divisors, whose sum is σ = 23820540. Its totient is φ = 23820538.

The previous prime is 23820523. The next prime is 23820551. The reversal of 23820539 is 93502832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23820539 - 2⁴ = 23820523 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23823539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11910269 + 11910270.

It is an arithmetic number, because the mean of its divisors is an integer number (11910270).

Almost surely, 2^23820539 is an apocalyptic number.

23820539 is a deficient number, since it is larger than the sum of its proper divisors (1).

23820539 is an equidigital number, since it uses as much as digits as its factorization.

23820539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 23820539 is about 4880.6289553704. The cubic root of 23820539 is about 287.7291491314.

The spelling of 23820539 in words is "twenty-three million, eight hundred twenty thousand, five hundred thirty-nine".