20343459 has 4 divisors (see below), whose sum is σ = 27124616. Its totient is φ = 13562304.

The previous prime is 20343419. The next prime is 20343473. The reversal of 20343459 is 95434302.

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

It is not a de Polignac number, because 20343459 - 2⁷ = 20343331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20343419) 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, 3390574 + ... + 3390579.

It is an arithmetic number, because the mean of its divisors is an integer number (6781154).

Almost surely, 2^20343459 is an apocalyptic number.

20343459 is a deficient number, since it is larger than the sum of its proper divisors (6781157).

20343459 is an equidigital number, since it uses as much as digits as its factorization.

20343459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781156.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 20343459 is about 4510.3723793053. The cubic root of 20343459 is about 272.9867696093.

It can be divided in two parts, 20343 and 459, that added together give a palindrome (20802).

The spelling of 20343459 in words is "twenty million, three hundred forty-three thousand, four hundred fifty-nine".