20328336 has 180 divisors, whose sum is σ = 68729232. Its totient is φ = 5588352.

The previous prime is 20328331. The next prime is 20328337. The reversal of 20328336 is 63382302.

20328336 is a `hidden beast` number, since 2 + 0 + 328 + 336 = 666.

It is not an unprimeable number, because it can be changed into a prime (20328331) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 303375 + ... + 303441.

Almost surely, 2^20328336 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 20328336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34364616).

20328336 is an abundant number, since it is smaller than the sum of its proper divisors (48400896).

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

20328336 is a wasteful number, since it uses less digits than its factorization.

20328336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 20328336 is about 4508.6955985074. The cubic root of 20328336 is about 272.9191081835.

The spelling of 20328336 in words is "twenty million, three hundred twenty-eight thousand, three hundred thirty-six".