20200023 has 10 divisors (see below), whose sum is σ = 30175464. Its totient is φ = 13466628.

The previous prime is 20200013. The next prime is 20200027. The reversal of 20200023 is 32000202.

It is not a de Polignac number, because 20200023 - 2¹⁰ = 20198999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20199978 and 20200014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200027) 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 9 ways as a sum of consecutive naturals, for example, 124611 + ... + 124772.

Almost surely, 2^20200023 is an apocalyptic number.

20200023 is a deficient number, since it is larger than the sum of its proper divisors (9975441).

20200023 is an equidigital number, since it uses as much as digits as its factorization.

20200023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249395 (or 249386 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 20200023 is about 4494.4435695645. The cubic root of 20200023 is about 272.3436715216.

Adding to 20200023 its reverse (32000202), we get a palindrome (52200225).

The spelling of 20200023 in words is "twenty million, two hundred thousand, twenty-three".