28773493056 has 336 divisors, whose sum is σ = 107347999680. Its totient is φ = 7473392640.

The previous prime is 28773493019. The next prime is 28773493079. The reversal of 28773493056 is 65039437782.

28773493056 is a `hidden beast` number, since 2 + 87 + 73 + 493 + 0 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

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

It is a junction number, because it is equal to n+sod(n) for n = 28773492993 and 28773493011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 915946 + ... + 946838.

Almost surely, 2^28773493056 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 28773493056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53673999840).

28773493056 is an abundant number, since it is smaller than the sum of its proper divisors (78574506624).

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

28773493056 is a wasteful number, since it uses less digits than its factorization.

28773493056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30939 (or 30916 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 54.

The spelling of 28773493056 in words is "twenty-eight billion, seven hundred seventy-three million, four hundred ninety-three thousand, fifty-six".