20384593 has 8 divisors (see below), whose sum is σ = 21378600. Its totient is φ = 19410048.

The previous prime is 20384563. The next prime is 20384603. The reversal of 20384593 is 39548302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10093329 + 10291264 = 3177^2 + 3208^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20384593 - 2⁵ = 20384561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20384563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2698 + ... + 6931.

It is an arithmetic number, because the mean of its divisors is an integer number (2672325).

Almost surely, 2^20384593 is an apocalyptic number.

It is an amenable number.

20384593 is a deficient number, since it is larger than the sum of its proper divisors (994007).

20384593 is an equidigital number, since it uses as much as digits as its factorization.

20384593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9731.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 20384593 is about 4514.9300105317. The cubic root of 20384593 is about 273.1706367021.

The spelling of 20384593 in words is "twenty million, three hundred eighty-four thousand, five hundred ninety-three".