20344163 has 6 divisors (see below), whose sum is σ = 23665716. Its totient is φ = 17437812.

The previous prime is 20344157. The next prime is 20344187. The reversal of 20344163 is 36144302.

It is a happy number.

It is not a de Polignac number, because 20344163 - 2⁴ = 20344147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20344123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 207545 + ... + 207642.

It is an arithmetic number, because the mean of its divisors is an integer number (3944286).

Almost surely, 2^20344163 is an apocalyptic number.

20344163 is a deficient number, since it is larger than the sum of its proper divisors (3321553).

20344163 is an equidigital number, since it uses as much as digits as its factorization.

20344163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415201 (or 415194 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 20344163 is about 4510.4504209668. The cubic root of 20344163 is about 272.9899185407.

Adding to 20344163 its reverse (36144302), we get a palindrome (56488465).

The spelling of 20344163 in words is "twenty million, three hundred forty-four thousand, one hundred sixty-three".