20352402720 has 576 divisors, whose sum is σ = 81789087744. Its totient is φ = 4560814080.

The previous prime is 20352402677. The next prime is 20352402727. The reversal of 20352402720 is 2720425302.

20352402720 is a `hidden beast` number, since 2 + 0 + 352 + 40 + 272 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (20352402727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9864409 + ... + 9866471.

It is an arithmetic number, because the mean of its divisors is an integer number (141994944).

Almost surely, 2^20352402720 is an apocalyptic number.

20352402720 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 20352402720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40894543872).

20352402720 is an abundant number, since it is smaller than the sum of its proper divisors (61436685024).

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

20352402720 is a wasteful number, since it uses less digits than its factorization.

20352402720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2145 (or 2134 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The spelling of 20352402720 in words is "twenty billion, three hundred fifty-two million, four hundred two thousand, seven hundred twenty".