28555833474 has 96 divisors (see below), whose sum is σ = 73411752960. Its totient is φ = 8149555152.

The previous prime is 28555833469. The next prime is 28555833491. The reversal of 28555833474 is 47433855582.

28555833474 is a `hidden beast` number, since 2 + 8 + 55 + 583 + 3 + 4 + 7 + 4 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28555833474.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3339897 + ... + 3348435.

It is an arithmetic number, because the mean of its divisors is an integer number (764705760).

Almost surely, 2^28555833474 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28555833474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36705876480).

28555833474 is an abundant number, since it is smaller than the sum of its proper divisors (44855919486).

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

28555833474 is an equidigital number, since it uses as much as digits as its factorization.

28555833474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9546 (or 9534 counting only the distinct ones).

The product of its digits is 16128000, while the sum is 54.

The spelling of 28555833474 in words is "twenty-eight billion, five hundred fifty-five million, eight hundred thirty-three thousand, four hundred seventy-four".