20302193 has 4 divisors (see below), whose sum is σ = 20313600. Its totient is φ = 20290788.

The previous prime is 20302189. The next prime is 20302207. The reversal of 20302193 is 39120302.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20302193 - 2² = 20302189 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20302133) 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, 2393 + ... + 6806.

It is an arithmetic number, because the mean of its divisors is an integer number (5078400).

Almost surely, 2^20302193 is an apocalyptic number.

It is an amenable number.

20302193 is a deficient number, since it is larger than the sum of its proper divisors (11407).

20302193 is an equidigital number, since it uses as much as digits as its factorization.

20302193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11406.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 20302193 is about 4505.7954902547. The cubic root of 20302193 is about 272.8020632693.

Adding to 20302193 its reverse (39120302), we get a palindrome (59422495).

The spelling of 20302193 in words is "twenty million, three hundred two thousand, one hundred ninety-three".