28816642080 has 192 divisors, whose sum is σ = 100936523520. Its totient is φ = 7678476288.

The previous prime is 28816642079. The next prime is 28816642093. The reversal of 28816642080 is 8024661882.

28816642080 is a `hidden beast` number, since 288 + 166 + 4 + 208 + 0 = 666.

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 31 ways as a sum of consecutive naturals, for example, 10465984 + ... + 10468736.

It is an arithmetic number, because the mean of its divisors is an integer number (525711060).

Almost surely, 2^28816642080 is an apocalyptic number.

28816642080 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 28816642080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50468261760).

28816642080 is an abundant number, since it is smaller than the sum of its proper divisors (72119881440).

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

28816642080 is a wasteful number, since it uses less digits than its factorization.

28816642080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5200 (or 5186 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The spelling of 28816642080 in words is "twenty-eight billion, eight hundred sixteen million, six hundred forty-two thousand, eighty".