20334409 has 8 divisors (see below), whose sum is σ = 21121920. Its totient is φ = 19561776.

The previous prime is 20334403. The next prime is 20334437. The reversal of 20334409 is 90443302.

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

It is not a de Polignac number, because 20334409 - 2¹⁹ = 19810121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20334403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 894 + ... + 6439.

It is an arithmetic number, because the mean of its divisors is an integer number (2640240).

Almost surely, 2^20334409 is an apocalyptic number.

It is an amenable number.

20334409 is a deficient number, since it is larger than the sum of its proper divisors (787511).

20334409 is an equidigital number, since it uses as much as digits as its factorization.

20334409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7439.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 20334409 is about 4509.3690245976. The cubic root of 20334409 is about 272.9462832675.

The spelling of 20334409 in words is "twenty million, three hundred thirty-four thousand, four hundred nine".