28450936800 has 1152 divisors, whose sum is σ = 123682083840. Its totient is φ = 6220800000.

The previous prime is 28450936777. The next prime is 28450936817. The reversal of 28450936800 is 863905482.

28450936800 is a `hidden beast` number, since 2 + 84 + 509 + 3 + 68 + 0 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 188416725 + ... + 188416875.

It is an arithmetic number, because the mean of its divisors is an integer number (107362920).

Almost surely, 2^28450936800 is an apocalyptic number.

28450936800 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 28450936800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61841041920).

28450936800 is an abundant number, since it is smaller than the sum of its proper divisors (95231147040).

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

28450936800 is a wasteful number, since it uses less digits than its factorization.

28450936800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 28450936800 in words is "twenty-eight billion, four hundred fifty million, nine hundred thirty-six thousand, eight hundred".