20444589 has 32 divisors (see below), whose sum is σ = 34790400. Its totient is φ = 11735280.

The previous prime is 20444579. The next prime is 20444639. The reversal of 20444589 is 98544402.

20444589 is a `hidden beast` number, since 204 + 445 + 8 + 9 = 666.

It is not a de Polignac number, because 20444589 - 2⁹ = 20444077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20444509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3832 + ... + 7454.

It is an arithmetic number, because the mean of its divisors is an integer number (1087200).

Almost surely, 2^20444589 is an apocalyptic number.

It is an amenable number.

20444589 is a deficient number, since it is larger than the sum of its proper divisors (14345811).

20444589 is a wasteful number, since it uses less digits than its factorization.

20444589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3662 (or 3656 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 20444589 is about 4521.5693072207. The cubic root of 20444589 is about 273.4383731063.

The spelling of 20444589 in words is "twenty million, four hundred forty-four thousand, five hundred eighty-nine".