28402219200 has 168 divisors, whose sum is σ = 93318868480. Its totient is φ = 7562880000.

The previous prime is 28402219199. The next prime is 28402219267. The reversal of 28402219200 is 291220482.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3600861 + ... + 3608739.

Almost surely, 2^28402219200 is an apocalyptic number.

28402219200 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 28402219200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46659434240).

28402219200 is an abundant number, since it is smaller than the sum of its proper divisors (64916649280).

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

28402219200 is a wasteful number, since it uses less digits than its factorization.

28402219200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8655 (or 8640 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

Adding to 28402219200 its reverse (291220482), we get a palindrome (28693439682).

The spelling of 28402219200 in words is "twenty-eight billion, four hundred two million, two hundred nineteen thousand, two hundred".