20258023 has 2 divisors, whose sum is σ = 20258024. Its totient is φ = 20258022.

The previous prime is 20257997. The next prime is 20258041. The reversal of 20258023 is 32085202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20258023 - 2²¹ = 18160871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20257985 and 20258003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20258083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10129011 + 10129012.

It is an arithmetic number, because the mean of its divisors is an integer number (10129012).

Almost surely, 2^20258023 is an apocalyptic number.

20258023 is a deficient number, since it is larger than the sum of its proper divisors (1).

20258023 is an equidigital number, since it uses as much as digits as its factorization.

20258023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 20258023 is about 4500.8913561649. The cubic root of 20258023 is about 272.6040811065.

The spelling of 20258023 in words is "twenty million, two hundred fifty-eight thousand, twenty-three".