20704445 has 8 divisors (see below), whose sum is σ = 24901344. Its totient is φ = 16526224.

The previous prime is 20704417. The next prime is 20704447. The reversal of 20704445 is 54440702.

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

It is a cyclic number.

It is not a de Polignac number, because 20704445 - 2¹⁰ = 20703421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20704447) 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 7 ways as a sum of consecutive naturals, for example, 2099 + ... + 6768.

It is an arithmetic number, because the mean of its divisors is an integer number (3112668).

Almost surely, 2^20704445 is an apocalyptic number.

It is an amenable number.

20704445 is a deficient number, since it is larger than the sum of its proper divisors (4196899).

20704445 is an equidigital number, since it uses as much as digits as its factorization.

20704445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9339.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 20704445 is about 4550.2137312438. The cubic root of 20704445 is about 274.5919899874.

The spelling of 20704445 in words is "twenty million, seven hundred four thousand, four hundred forty-five".