28803765456 has 40 divisors (see below), whose sum is σ = 82677476160. Its totient is φ = 9601255008.

The previous prime is 28803765451. The next prime is 28803765457. The reversal of 28803765456 is 65456730882.

28803765456 is a `hidden beast` number, since 28 + 8 + 0 + 3 + 76 + 545 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28803765451) 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 7 ways as a sum of consecutive naturals, for example, 33337260 + ... + 33338123.

It is an arithmetic number, because the mean of its divisors is an integer number (2066936904).

Almost surely, 2^28803765456 is an apocalyptic number.

It is an amenable number.

28803765456 is an abundant number, since it is smaller than the sum of its proper divisors (53873710704).

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

28803765456 is a wasteful number, since it uses less digits than its factorization.

28803765456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66675400 (or 66675388 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 54.

The spelling of 28803765456 in words is "twenty-eight billion, eight hundred three million, seven hundred sixty-five thousand, four hundred fifty-six".