20822023 has 4 divisors (see below), whose sum is σ = 20846488. Its totient is φ = 20797560.

The previous prime is 20822017. The next prime is 20822033. The reversal of 20822023 is 32022802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20822023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20822033) 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 3 ways as a sum of consecutive naturals, for example, 10908 + ... + 12673.

It is an arithmetic number, because the mean of its divisors is an integer number (5211622).

Almost surely, 2^20822023 is an apocalyptic number.

20822023 is a deficient number, since it is larger than the sum of its proper divisors (24465).

20822023 is an equidigital number, since it uses as much as digits as its factorization.

20822023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24464.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 20822023 is about 4563.1154927308. The cubic root of 20822023 is about 275.1108005303.

Adding to 20822023 its reverse (32022802), we get a palindrome (52844825).

The spelling of 20822023 in words is "twenty million, eight hundred twenty-two thousand, twenty-three".