28884442356 has 144 divisors (see below), whose sum is σ = 91865854080. Its totient is φ = 7433544960.

The previous prime is 28884442343. The next prime is 28884442361. The reversal of 28884442356 is 65324448882.

28884442356 is a `hidden beast` number, since 288 + 8 + 4 + 4 + 4 + 2 + 356 = 666.

It is a super-2 number, since 2×28884442356² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 254350 + ... + 349946.

It is an arithmetic number, because the mean of its divisors is an integer number (637957320).

Almost surely, 2^28884442356 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 28884442356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45932927040).

28884442356 is an abundant number, since it is smaller than the sum of its proper divisors (62981411724).

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

28884442356 is a wasteful number, since it uses less digits than its factorization.

28884442356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95734 (or 95729 counting only the distinct ones).

The product of its digits is 11796480, while the sum is 54.

The spelling of 28884442356 in words is "twenty-eight billion, eight hundred eighty-four million, four hundred forty-two thousand, three hundred fifty-six".