20800228000 has 96 divisors (see below), whose sum is σ = 51320597328. Its totient is φ = 8285184000.

The previous prime is 20800227949. The next prime is 20800228027. The reversal of 20800228000 is 82200802.

It can be written as a sum of positive squares in 8 ways, for example, as 4884891664 + 15915336336 = 69892^2 + 126156^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 953212 + ... + 974788.

Almost surely, 2^20800228000 is an apocalyptic number.

20800228000 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 20800228000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25660298664).

20800228000 is an abundant number, since it is smaller than the sum of its proper divisors (30520369328).

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

20800228000 is a wasteful number, since it uses less digits than its factorization.

20800228000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21843 (or 21825 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 20800228000 its reverse (82200802), we get a palindrome (20882428802).

The spelling of 20800228000 in words is "twenty billion, eight hundred million, two hundred twenty-eight thousand".