28856833200 has 720 divisors, whose sum is σ = 114772091616. Its totient is φ = 6917529600.

The previous prime is 28856833199. The next prime is 28856833211. The reversal of 28856833200 is 233865882.

28856833200 is a `hidden beast` number, since 2 + 88 + 568 + 3 + 3 + 2 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

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 143 ways as a sum of consecutive naturals, for example, 51807322 + ... + 51807878.

Almost surely, 2^28856833200 is an apocalyptic number.

28856833200 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 28856833200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57386045808).

28856833200 is an abundant number, since it is smaller than the sum of its proper divisors (85915258416).

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

28856833200 is a wasteful number, since it uses less digits than its factorization.

28856833200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 621 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 28856833200 in words is "twenty-eight billion, eight hundred fifty-six million, eight hundred thirty-three thousand, two hundred".