20330445 has 8 divisors (see below), whose sum is σ = 32528736. Its totient is φ = 10842896.

The previous prime is 20330411. The next prime is 20330467. The reversal of 20330445 is 54403302.

It is a happy number.

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 20330445 - 2¹² = 20326349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 677667 + ... + 677696.

It is an arithmetic number, because the mean of its divisors is an integer number (4066092).

Almost surely, 2^20330445 is an apocalyptic number.

It is an amenable number.

20330445 is a deficient number, since it is larger than the sum of its proper divisors (12198291).

20330445 is a wasteful number, since it uses less digits than its factorization.

20330445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355371.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 20330445 is about 4508.9294738330. The cubic root of 20330445 is about 272.9285460193.

Adding to 20330445 its reverse (54403302), we get a palindrome (74733747).

The spelling of 20330445 in words is "twenty million, three hundred thirty thousand, four hundred forty-five".