20303682880 has 112 divisors (see below), whose sum is σ = 52546087440. Its totient is φ = 7427801088.

The previous prime is 20303682859. The next prime is 20303682887. The reversal of 20303682880 is 8828630302.

It can be written as a sum of positive squares in 8 ways, for example, as 465523776 + 19838159104 = 21576^2 + 140848^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303682887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431052 + ... + 475828.

It is an arithmetic number, because the mean of its divisors is an integer number (469161495).

Almost surely, 2^20303682880 is an apocalyptic number.

20303682880 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 20303682880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26273043720).

20303682880 is an abundant number, since it is smaller than the sum of its proper divisors (32242404560).

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

20303682880 is a wasteful number, since it uses less digits than its factorization.

20303682880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44916 (or 44906 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 20303682880 in words is "twenty billion, three hundred three million, six hundred eighty-two thousand, eight hundred eighty".