20289096 has 128 divisors (see below), whose sum is σ = 60480000. Its totient is φ = 6289920.

The previous prime is 20289091. The next prime is 20289103. The reversal of 20289096 is 69098202.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20289096.

It is not an unprimeable number, because it can be changed into a prime (20289091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256785 + ... + 256863.

It is an arithmetic number, because the mean of its divisors is an integer number (472500).

Almost surely, 2^20289096 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20289096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30240000).

20289096 is an abundant number, since it is smaller than the sum of its proper divisors (40190904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20289096 is a wasteful number, since it uses less digits than its factorization.

20289096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 20289096 is about 4504.3419053176. The cubic root of 20289096 is about 272.7433888658.

It can be divided in two parts, 202 and 89096, that added together give a palindrome (89298).

The spelling of 20289096 in words is "twenty million, two hundred eighty-nine thousand, ninety-six".