20023012 has 12 divisors (see below), whose sum is σ = 35097916. Its totient is φ = 9995040.

The previous prime is 20023009. The next prime is 20023027. The reversal of 20023012 is 21032002.

It can be written as a sum of positive squares in 2 ways, for example, as 18714276 + 1308736 = 4326^2 + 1144^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20023012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1143 + ... + 6430.

Almost surely, 2^20023012 is an apocalyptic number.

It is an amenable number.

20023012 is a deficient number, since it is larger than the sum of its proper divisors (15074904).

20023012 is a wasteful number, since it uses less digits than its factorization.

20023012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8238 (or 8236 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 20023012 is about 4474.7080351683. The cubic root of 20023012 is about 271.5458287202.

Adding to 20023012 its reverse (21032002), we get a palindrome (41055014).

The spelling of 20023012 in words is "twenty million, twenty-three thousand, twelve".