20259023 has 8 divisors (see below), whose sum is σ = 21027600. Its totient is φ = 19495168.

The previous prime is 20259011. The next prime is 20259049. The reversal of 20259023 is 32095202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20259023 - 2²⁰ = 19210447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20259023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20259623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9248 + ... + 11226.

It is an arithmetic number, because the mean of its divisors is an integer number (2628450).

Almost surely, 2^20259023 is an apocalyptic number.

20259023 is a deficient number, since it is larger than the sum of its proper divisors (768577).

20259023 is a wasteful number, since it uses less digits than its factorization.

20259023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 20259023 is about 4501.0024439007. The cubic root of 20259023 is about 272.6085665655.

It can be divided in two parts, 2025902 and 3, that multiplied together give a palindrome (6077706).

The spelling of 20259023 in words is "twenty million, two hundred fifty-nine thousand, twenty-three".