20169343 has 4 divisors (see below), whose sum is σ = 20205360. Its totient is φ = 20133328.

The previous prime is 20169323. The next prime is 20169349. The reversal of 20169343 is 34396102.

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 20169343 - 2⁵ = 20169311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20169349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17155 + ... + 18292.

It is an arithmetic number, because the mean of its divisors is an integer number (5051340).

Almost surely, 2^20169343 is an apocalyptic number.

20169343 is a deficient number, since it is larger than the sum of its proper divisors (36017).

20169343 is an equidigital number, since it uses as much as digits as its factorization.

20169343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36016.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 20169343 is about 4491.0291693553. The cubic root of 20169343 is about 272.2057222140.

The spelling of 20169343 in words is "twenty million, one hundred sixty-nine thousand, three hundred forty-three".