28776853784448 has 960 divisors, whose sum is σ = 111290781016800. Its totient is φ = 7216701972480.

The previous prime is 28776853784443. The next prime is 28776853784461. The reversal of 28776853784448 is 84448735867782.

28776853784448 is a `hidden beast` number, since 2 + 8 + 7 + 7 + 68 + 5 + 37 + 84 + 448 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28776853784443) 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 119 ways as a sum of consecutive naturals, for example, 254612686 + ... + 254725682.

Almost surely, 2^{28776853784448} is an apocalyptic number.

28776853784448 is a gapful number since it is divisible by the number (28) 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 28776853784448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55645390508400).

28776853784448 is an abundant number, since it is smaller than the sum of its proper divisors (82513927232352).

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

28776853784448 is a wasteful number, since it uses less digits than its factorization.

28776853784448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113081 (or 113049 counting only the distinct ones).

The product of its digits is 16184770560, while the sum is 81.

The spelling of 28776853784448 in words is "twenty-eight trillion, seven hundred seventy-six billion, eight hundred fifty-three million, seven hundred eighty-four thousand, four hundred forty-eight".