20026269 has 18 divisors (see below), whose sum is σ = 30032730. Its totient is φ = 12843936.

The previous prime is 20026267. The next prime is 20026273. The reversal of 20026269 is 96262002.

It can be written as a sum of positive squares in 3 ways, for example, as 45369 + 19980900 = 213^2 + 4470^2 .

It is not a de Polignac number, because 20026269 - 2¹ = 20026267 is a prime.

It is a super-2 number, since 2×20026269² = 802102900120722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20026267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 72159 + ... + 72435.

It is an arithmetic number, because the mean of its divisors is an integer number (1668485).

Almost surely, 2^20026269 is an apocalyptic number.

20026269 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

20026269 is a deficient number, since it is larger than the sum of its proper divisors (10006461).

20026269 is an equidigital number, since it uses as much as digits as its factorization.

20026269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 20026269 is about 4475.0719547288. The cubic root of 20026269 is about 271.5605513938.

The spelling of 20026269 in words is "twenty million, twenty-six thousand, two hundred sixty-nine".