20130336 has 96 divisors (see below), whose sum is σ = 61326720. Its totient is φ = 6412032.

The previous prime is 20130293. The next prime is 20130343. The reversal of 20130336 is 63303102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19366 + ... + 20378.

It is an arithmetic number, because the mean of its divisors is an integer number (638820).

Almost surely, 2^20130336 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 20130336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30663360).

20130336 is an abundant number, since it is smaller than the sum of its proper divisors (41196384).

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

20130336 is a wasteful number, since it uses less digits than its factorization.

20130336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055 (or 1041 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 20130336 is about 4486.6842991234. The cubic root of 20130336 is about 272.0301293038.

Adding to 20130336 its reverse (63303102), we get a palindrome (83433438).

The spelling of 20130336 in words is "twenty million, one hundred thirty thousand, three hundred thirty-six".