28769367816 has 96 divisors (see below), whose sum is σ = 89291255040. Its totient is φ = 8197369344.

The previous prime is 28769367811. The next prime is 28769367821. The reversal of 28769367816 is 61876396782.

It is an interprime number because it is at equal distance from previous prime (28769367811) and next prime (28769367821).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (28769367811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107200 + ... + 262736.

It is an arithmetic number, because the mean of its divisors is an integer number (930117240).

Almost surely, 2^28769367816 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 28769367816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44645627520).

28769367816 is an abundant number, since it is smaller than the sum of its proper divisors (60521887224).

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

28769367816 is a wasteful number, since it uses less digits than its factorization.

28769367816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155923 (or 155916 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The spelling of 28769367816 in words is "twenty-eight billion, seven hundred sixty-nine million, three hundred sixty-seven thousand, eight hundred sixteen".