20226239 has 6 divisors (see below), whose sum is σ = 22232280. Its totient is φ = 18387380.

The previous prime is 20226233. The next prime is 20226247. The reversal of 20226239 is 93262202.

It is not a de Polignac number, because 20226239 - 2²⁰ = 19177663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20226233) 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 5 ways as a sum of consecutive naturals, for example, 83459 + ... + 83700.

It is an arithmetic number, because the mean of its divisors is an integer number (3705380).

Almost surely, 2^20226239 is an apocalyptic number.

20226239 is a deficient number, since it is larger than the sum of its proper divisors (2006041).

20226239 is a wasteful number, since it uses less digits than its factorization.

20226239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167181 (or 167170 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 20226239 is about 4497.3591139690. The cubic root of 20226239 is about 272.4614383051.

The spelling of 20226239 in words is "twenty million, two hundred twenty-six thousand, two hundred thirty-nine".