28143367200 has 648 divisors, whose sum is σ = 108999547020. Its totient is φ = 6829056000.

The previous prime is 28143367199. The next prime is 28143367261. The reversal of 28143367200 is 276334182.

It is a happy number.

It can be written as a sum of positive squares in 18 ways, for example, as 12027024 + 28131340176 = 3468^2 + 167724^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 122896686 + ... + 122896914.

Almost surely, 2^28143367200 is an apocalyptic number.

28143367200 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 28143367200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54499773510).

28143367200 is an abundant number, since it is smaller than the sum of its proper divisors (80856179820).

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

28143367200 is a wasteful number, since it uses less digits than its factorization.

28143367200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 28143367200 in words is "twenty-eight billion, one hundred forty-three million, three hundred sixty-seven thousand, two hundred".