20612023 has 4 divisors (see below), whose sum is σ = 20670768. Its totient is φ = 20553280.

The previous prime is 20612021. The next prime is 20612027. The reversal of 20612023 is 32021602.

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

It is a cyclic number.

It is not a de Polignac number, because 20612023 - 2¹ = 20612021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20611988 and 20612006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20612021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28843 + ... + 29548.

It is an arithmetic number, because the mean of its divisors is an integer number (5167692).

Almost surely, 2^20612023 is an apocalyptic number.

20612023 is a deficient number, since it is larger than the sum of its proper divisors (58745).

20612023 is an equidigital number, since it uses as much as digits as its factorization.

20612023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58744.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20612023 is about 4540.0465856641. The cubic root of 20612023 is about 274.1827993246.

Adding to 20612023 its reverse (32021602), we get a palindrome (52633625).

The spelling of 20612023 in words is "twenty million, six hundred twelve thousand, twenty-three".