20326239 has 12 divisors (see below), whose sum is σ = 29405376. Its totient is φ = 13529952.

The previous prime is 20326213. The next prime is 20326247. The reversal of 20326239 is 93262302.

20326239 is a `hidden beast` number, since 2 + 0 + 32 + 623 + 9 = 666.

It is not a de Polignac number, because 20326239 - 2¹⁶ = 20260703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20326249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6459 + ... + 9075.

It is an arithmetic number, because the mean of its divisors is an integer number (2450448).

Almost surely, 2^20326239 is an apocalyptic number.

20326239 is a deficient number, since it is larger than the sum of its proper divisors (9079137).

20326239 is a wasteful number, since it uses less digits than its factorization.

20326239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3486 (or 3483 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 20326239 is about 4508.4630418802. The cubic root of 20326239 is about 272.9097234007.

The spelling of 20326239 in words is "twenty million, three hundred twenty-six thousand, two hundred thirty-nine".