20433023 has 16 divisors (see below), whose sum is σ = 23073120. Its totient is φ = 17963904.

The previous prime is 20433013. The next prime is 20433043. The reversal of 20433023 is 32033402.

It is a cyclic number.

It is not a de Polignac number, because 20433023 - 2⁸ = 20432767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20432992 and 20433010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20433013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30965 + ... + 31617.

It is an arithmetic number, because the mean of its divisors is an integer number (1442070).

Almost surely, 2^20433023 is an apocalyptic number.

20433023 is a deficient number, since it is larger than the sum of its proper divisors (2640097).

20433023 is a wasteful number, since it uses less digits than its factorization.

20433023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778.

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 20433023 is about 4520.2901455548. The cubic root of 20433023 is about 273.3867998058.

Adding to 20433023 its reverse (32033402), we get a palindrome (52466425).

The spelling of 20433023 in words is "twenty million, four hundred thirty-three thousand, twenty-three".