20339593 has 4 divisors (see below), whose sum is σ = 20355840. Its totient is φ = 20323348.

The previous prime is 20339587. The next prime is 20339597. The reversal of 20339593 is 39593302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20339593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20339597) 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, 6073 + ... + 8806.

It is an arithmetic number, because the mean of its divisors is an integer number (5088960).

Almost surely, 2^20339593 is an apocalyptic number.

It is an amenable number.

20339593 is a deficient number, since it is larger than the sum of its proper divisors (16247).

20339593 is a wasteful number, since it uses less digits than its factorization.

20339593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16246.

The product of its (nonzero) digits is 21870, while the sum is 34.

The square root of 20339593 is about 4509.9437912240. The cubic root of 20339593 is about 272.9694760293.

The spelling of 20339593 in words is "twenty million, three hundred thirty-nine thousand, five hundred ninety-three".