20727736120 has 256 divisors, whose sum is σ = 61007385600. Its totient is φ = 6154444800.

The previous prime is 20727736111. The next prime is 20727736201. The reversal of 20727736120 is 2163772702.

It is a self number, because there is not a number n which added to its sum of digits gives 20727736120.

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 63 ways as a sum of consecutive naturals, for example, 7398720 + ... + 7401520.

It is an arithmetic number, because the mean of its divisors is an integer number (238310100).

Almost surely, 2^20727736120 is an apocalyptic number.

20727736120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20727736120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30503692800).

20727736120 is an abundant number, since it is smaller than the sum of its proper divisors (40279649480).

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

20727736120 is a wasteful number, since it uses less digits than its factorization.

20727736120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2958 (or 2954 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 37.

The spelling of 20727736120 in words is "twenty billion, seven hundred twenty-seven million, seven hundred thirty-six thousand, one hundred twenty".