20020023 has 6 divisors (see below), whose sum is σ = 28917824. Its totient is φ = 13346676.

The previous prime is 20020019. The next prime is 20020027. The reversal of 20020023 is 32002002.

It is an interprime number because it is at equal distance from previous prime (20020019) and next prime (20020027).

It is not a de Polignac number, because 20020023 - 2² = 20020019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 2224447 = 20020023 / (2 + 0 + 0 + 2 + 0 + 0 + 2 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20019987 and 20020014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1112215 + ... + 1112232.

Almost surely, 2^20020023 is an apocalyptic number.

20020023 is a deficient number, since it is larger than the sum of its proper divisors (8897801).

20020023 is a wasteful number, since it uses less digits than its factorization.

20020023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224453 (or 2224450 counting only the distinct ones).

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

The square root of 20020023 is about 4474.3740344321. The cubic root of 20020023 is about 271.5323160866.

Adding to 20020023 its reverse (32002002), we get a palindrome (52022025).

It can be divided in two parts, 2002002 and 3, that multiplied together give a palindrome (6006006).

The spelling of 20020023 in words is "twenty million, twenty thousand, twenty-three".