20305059 has 4 divisors (see below), whose sum is σ = 27073416. Its totient is φ = 13536704.

The previous prime is 20305049. The next prime is 20305063. The reversal of 20305059 is 95050302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20305059 - 2⁸ = 20304803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20305039) 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 3 ways as a sum of consecutive naturals, for example, 3384174 + ... + 3384179.

It is an arithmetic number, because the mean of its divisors is an integer number (6768354).

Almost surely, 2^20305059 is an apocalyptic number.

20305059 is a deficient number, since it is larger than the sum of its proper divisors (6768357).

20305059 is an equidigital number, since it uses as much as digits as its factorization.

20305059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6768356.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 20305059 is about 4506.1135138831. The cubic root of 20305059 is about 272.8148995497.

The spelling of 20305059 in words is "twenty million, three hundred five thousand, fifty-nine".