20006889 has 8 divisors (see below), whose sum is σ = 30486720. Its totient is φ = 11432496.

The previous prime is 20006887. The next prime is 20006923. The reversal of 20006889 is 98860002.

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

It is not a de Polignac number, because 20006889 - 2¹ = 20006887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20006881) 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 7 ways as a sum of consecutive naturals, for example, 476334 + ... + 476375.

It is an arithmetic number, because the mean of its divisors is an integer number (3810840).

Almost surely, 2^20006889 is an apocalyptic number.

It is an amenable number.

20006889 is a deficient number, since it is larger than the sum of its proper divisors (10479831).

20006889 is an equidigital number, since it uses as much as digits as its factorization.

20006889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952719.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 20006889 is about 4472.9061023008. The cubic root of 20006889 is about 271.4729241201.

The spelling of 20006889 in words is "twenty million, six thousand, eight hundred eighty-nine".