20708708832 has 336 divisors, whose sum is σ = 72285423840. Its totient is φ = 5711440896.

The previous prime is 20708708777. The next prime is 20708708837. The reversal of 20708708832 is 23880780702.

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20708708837) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 4733398 + ... + 4737770.

It is an arithmetic number, because the mean of its divisors is an integer number (215135190).

Almost surely, 2^20708708832 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 20708708832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36142711920).

20708708832 is an abundant number, since it is smaller than the sum of its proper divisors (51576715008).

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

20708708832 is an equidigital number, since it uses as much as digits as its factorization.

20708708832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4437 (or 4414 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

It can be divided in two parts, 2070870 and 8832, that added together give a palindrome (2079702).

The spelling of 20708708832 in words is "twenty billion, seven hundred eight million, seven hundred eight thousand, eight hundred thirty-two".