20032706720 has 96 divisors (see below), whose sum is σ = 51666409872. Its totient is φ = 7295311872.

The previous prime is 20032706713. The next prime is 20032706737. The reversal of 20032706720 is 2760723002.

It can be written as a sum of positive squares in 8 ways, for example, as 5849802256 + 14182904464 = 76484^2 + 119092^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 85874 + ... + 217806.

Almost surely, 2^20032706720 is an apocalyptic number.

20032706720 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 20032706720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25833204936).

20032706720 is an abundant number, since it is smaller than the sum of its proper divisors (31633703152).

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

20032706720 is a wasteful number, since it uses less digits than its factorization.

20032706720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132034 (or 132026 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 29.

The spelling of 20032706720 in words is "twenty billion, thirty-two million, seven hundred six thousand, seven hundred twenty".