20010023 has 16 divisors (see below), whose sum is σ = 22982400. Its totient is φ = 17244480.

The previous prime is 20010017. The next prime is 20010041. The reversal of 20010023 is 32001002.

It is not a de Polignac number, because 20010023 - 2¹⁰ = 20008999 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 (20010073) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 34883 + ... + 35451.

It is an arithmetic number, because the mean of its divisors is an integer number (1436400).

Almost surely, 2^20010023 is an apocalyptic number.

20010023 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20010023 is a deficient number, since it is larger than the sum of its proper divisors (2972377).

20010023 is a wasteful number, since it uses less digits than its factorization.

20010023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 20010023 is about 4473.2564201038. The cubic root of 20010023 is about 271.4870984331.

Adding to 20010023 its reverse (32001002), we get a palindrome (52011025).

It can be divided in two parts, 2001002 and 3, that multiplied together give a palindrome (6003006).

The spelling of 20010023 in words is "twenty million, ten thousand, twenty-three".