28055835756 has 96 divisors (see below), whose sum is σ = 78368640000. Its totient is φ = 8628586560.

The previous prime is 28055835751. The next prime is 28055835763. The reversal of 28055835756 is 65753855082.

It is a happy number.

28055835756 is a `hidden beast` number, since 2 + 8 + 0 + 5 + 583 + 5 + 7 + 56 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (28055835751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4909741 + ... + 4915451.

It is an arithmetic number, because the mean of its divisors is an integer number (816340000).

Almost surely, 2^28055835756 is an apocalyptic number.

28055835756 is a gapful number since it is divisible by the number (26) 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 28055835756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39184320000).

28055835756 is an abundant number, since it is smaller than the sum of its proper divisors (50312804244).

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

28055835756 is a wasteful number, since it uses less digits than its factorization.

28055835756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9236 (or 9228 counting only the distinct ones).

The product of its (nonzero) digits is 10080000, while the sum is 54.

The spelling of 28055835756 in words is "twenty-eight billion, fifty-five million, eight hundred thirty-five thousand, seven hundred fifty-six".