20164343 has 4 divisors (see below), whose sum is σ = 20494968. Its totient is φ = 19833720.

The previous prime is 20164321. The next prime is 20164349. The reversal of 20164343 is 34346102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20164343 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 (20164349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165221 + ... + 165342.

It is an arithmetic number, because the mean of its divisors is an integer number (5123742).

Almost surely, 2^20164343 is an apocalyptic number.

20164343 is a deficient number, since it is larger than the sum of its proper divisors (330625).

20164343 is an equidigital number, since it uses as much as digits as its factorization.

20164343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330624.

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

The square root of 20164343 is about 4490.4724695738. The cubic root of 20164343 is about 272.1832269995.

The spelling of 20164343 in words is "twenty million, one hundred sixty-four thousand, three hundred forty-three".