28203372216 has 96 divisors (see below), whose sum is σ = 76977810000. Its totient is φ = 9328296960.

The previous prime is 28203372187. The next prime is 28203372217. The reversal of 28203372216 is 61227330282.

28203372216 is a `hidden beast` number, since 282 + 0 + 3 + 372 + 2 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28203372217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6500800 + ... + 6505136.

Almost surely, 2^28203372216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28203372216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38488905000).

28203372216 is an abundant number, since it is smaller than the sum of its proper divisors (48774437784).

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

28203372216 is a wasteful number, since it uses less digits than its factorization.

28203372216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5029 (or 5022 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 28203372216 in words is "twenty-eight billion, two hundred three million, three hundred seventy-two thousand, two hundred sixteen".