20812023 has 12 divisors (see below), whose sum is σ = 30702048. Its totient is φ = 13579200.

The previous prime is 20812021. The next prime is 20812039. The reversal of 20812023 is 32021802.

It is a happy number.

It is not a de Polignac number, because 20812023 - 2¹ = 20812021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20811987 and 20812005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20812021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24178 + ... + 25023.

It is an arithmetic number, because the mean of its divisors is an integer number (2558504).

Almost surely, 2^20812023 is an apocalyptic number.

20812023 is a deficient number, since it is larger than the sum of its proper divisors (9890025).

20812023 is a wasteful number, since it uses less digits than its factorization.

20812023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49254 (or 49251 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20812023 is about 4562.0196185462. The cubic root of 20812023 is about 275.0667518398.

Adding to 20812023 its reverse (32021802), we get a palindrome (52833825).

The spelling of 20812023 in words is "twenty million, eight hundred twelve thousand, twenty-three".