20720886048 has 336 divisors, whose sum is σ = 64080185400. Its totient is φ = 6584094720.

The previous prime is 20720886023. The next prime is 20720886059. The reversal of 20720886048 is 84068802702.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19986042384 + 734843664 = 141372^2 + 27108^2 .

It is a super-2 number, since 2×20720886048² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20720885994 and 20720886012.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 73739668 + ... + 73739948.

Almost surely, 2^20720886048 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 20720886048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32040092700).

20720886048 is an abundant number, since it is smaller than the sum of its proper divisors (43359299352).

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

20720886048 is a wasteful number, since it uses less digits than its factorization.

20720886048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The spelling of 20720886048 in words is "twenty billion, seven hundred twenty million, eight hundred eighty-six thousand, forty-eight".