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20221023 = 36740341
BaseRepresentation
bin100110100100…
…0110001011111
31102001100000210
41031020301133
520134033043
62001223503
7333606264
oct115106137
942040023
1020221023
1110461399
126931b93
13425cc04
14298526b
151b96633
hex1348c5f

20221023 has 4 divisors (see below), whose sum is σ = 26961368. Its totient is φ = 13480680.

The previous prime is 20221009. The next prime is 20221027. The reversal of 20221023 is 32012202.

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

It is not a de Polignac number, because 20221023 - 213 = 20212831 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 (20221027) 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, 3370168 + ... + 3370173.

It is an arithmetic number, because the mean of its divisors is an integer number (6740342).

Almost surely, 220221023 is an apocalyptic number.

20221023 is a deficient number, since it is larger than the sum of its proper divisors (6740345).

20221023 is an equidigital number, since it uses as much as digits as its factorization.

20221023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6740344.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20221023 is about 4496.7791807026. The cubic root of 20221023 is about 272.4380152482.

Adding to 20221023 its reverse (32012202), we get a palindrome (52233225).

The spelling of 20221023 in words is "twenty million, two hundred twenty-one thousand, twenty-three".

Divisors: 1 3 6740341 20221023