28167844608 has 216 divisors, whose sum is σ = 87889122048. Its totient is φ = 8980595712.

The previous prime is 28167844591. The next prime is 28167844633. The reversal of 28167844608 is 80644876182.

28167844608 is a `hidden beast` number, since 28 + 1 + 6 + 7 + 8 + 4 + 4 + 608 = 666.

It is a tau number, because it is divible by the number of its divisors (216).

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

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1420941 + ... + 1440627.

Almost surely, 2^28167844608 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 28167844608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43944561024).

28167844608 is an abundant number, since it is smaller than the sum of its proper divisors (59721277440).

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

28167844608 is an equidigital number, since it uses as much as digits as its factorization.

28167844608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19741 (or 19715 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 54.

The spelling of 28167844608 in words is "twenty-eight billion, one hundred sixty-seven million, eight hundred forty-four thousand, six hundred eight".