20344009 has 8 divisors (see below), whose sum is σ = 23280320. Its totient is φ = 17415216.

The previous prime is 20344007. The next prime is 20344033. The reversal of 20344009 is 90044302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20344009 - 2¹ = 20344007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20344007) 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 7 ways as a sum of consecutive naturals, for example, 6322 + ... + 8980.

It is an arithmetic number, because the mean of its divisors is an integer number (2910040).

Almost surely, 2^20344009 is an apocalyptic number.

It is an amenable number.

20344009 is a deficient number, since it is larger than the sum of its proper divisors (2936311).

20344009 is a wasteful number, since it uses less digits than its factorization.

20344009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3759.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 20344009 is about 4510.4333494688. The cubic root of 20344009 is about 272.9892297182.

The spelling of 20344009 in words is "twenty million, three hundred forty-four thousand, nine".