28225843200 has 780 divisors, whose sum is σ = 108395827848. Its totient is φ = 7254835200.

The previous prime is 28225843171. The next prime is 28225843211. The reversal of 28225843200 is 234852282.

28225843200 is a `hidden beast` number, since 2 + 82 + 258 + 4 + 320 + 0 = 666.

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 59 ways as a sum of consecutive naturals, for example, 340070359 + ... + 340070441.

Almost surely, 2^28225843200 is an apocalyptic number.

28225843200 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 28225843200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54197913924).

28225843200 is an abundant number, since it is smaller than the sum of its proper divisors (80169984648).

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

28225843200 is an equidigital number, since it uses as much as digits as its factorization.

28225843200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The spelling of 28225843200 in words is "twenty-eight billion, two hundred twenty-five million, eight hundred forty-three thousand, two hundred".