20708336 has 40 divisors (see below), whose sum is σ = 44257584. Its totient is φ = 9308160.

The previous prime is 20708323. The next prime is 20708377. The reversal of 20708336 is 63380702.

It is a junction number, because it is equal to n+sod(n) for n = 20708299 and 20708308.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16466 + ... + 17678.

Almost surely, 2^20708336 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 20708336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22128792).

20708336 is an abundant number, since it is smaller than the sum of its proper divisors (23549248).

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

20708336 is a wasteful number, since it uses less digits than its factorization.

20708336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329 (or 1323 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 20708336 is about 4550.6412734910. The cubic root of 20708336 is about 274.6091903278.

The spelling of 20708336 in words is "twenty million, seven hundred eight thousand, three hundred thirty-six".