28816277225856 has 128 divisors (see below), whose sum is σ = 76623459494400. Its totient is φ = 9595363934208.

The previous prime is 28816277225851. The next prime is 28816277225867. The reversal of 28816277225856 is 65852277261882.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28816277225851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1728311536 + ... + 1728328208.

It is an arithmetic number, because the mean of its divisors is an integer number (598620777300).

Almost surely, 2^{28816277225856} is an apocalyptic number.

It is an amenable number.

28816277225856 is an abundant number, since it is smaller than the sum of its proper divisors (47807182268544).

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

28816277225856 is a wasteful number, since it uses less digits than its factorization.

28816277225856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21136 (or 21124 counting only the distinct ones).

The product of its digits is 361267200, while the sum is 69.

The spelling of 28816277225856 in words is "twenty-eight trillion, eight hundred sixteen billion, two hundred seventy-seven million, two hundred twenty-five thousand, eight hundred fifty-six".