28870732800 has 1848 divisors, whose sum is σ = 139826738016. Its totient is φ = 5733089280.

The previous prime is 28870732799. The next prime is 28870732811. The reversal of 28870732800 is 823707882.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 1698278392 + ... + 1698278408.

Almost surely, 2^28870732800 is an apocalyptic number.

28870732800 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 28870732800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69913369008).

28870732800 is an abundant number, since it is smaller than the sum of its proper divisors (110956005216).

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

28870732800 is a wasteful number, since it uses less digits than its factorization.

28870732800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The spelling of 28870732800 in words is "twenty-eight billion, eight hundred seventy million, seven hundred thirty-two thousand, eight hundred".