20443323 has 8 divisors (see below), whose sum is σ = 27720000. Its totient is φ = 13397768.

The previous prime is 20443301. The next prime is 20443331. The reversal of 20443323 is 32334402.

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 20443323 - 2¹³ = 20435131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20443323.

It is not an unprimeable number, because it can be changed into a prime (20443363) 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, 57573 + ... + 57926.

It is an arithmetic number, because the mean of its divisors is an integer number (3465000).

Almost surely, 2^20443323 is an apocalyptic number.

20443323 is a deficient number, since it is larger than the sum of its proper divisors (7276677).

20443323 is a wasteful number, since it uses less digits than its factorization.

20443323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115561.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 20443323 is about 4521.4293094109. The cubic root of 20443323 is about 273.4327289051.

Adding to 20443323 its reverse (32334402), we get a palindrome (52777725).

The spelling of 20443323 in words is "twenty million, four hundred forty-three thousand, three hundred twenty-three".