28841142064 has 120 divisors (see below), whose sum is σ = 66388027680. Its totient is φ = 12099935232.

The previous prime is 28841142041. The next prime is 28841142067. The reversal of 28841142064 is 46024114882.

It is a super-2 number, since 2×28841142064² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28841142067) by changing a digit.

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, 7184922 + ... + 7188934.

It is an arithmetic number, because the mean of its divisors is an integer number (553233564).

Almost surely, 2^28841142064 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 28841142064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33194013840).

28841142064 is an abundant number, since it is smaller than the sum of its proper divisors (37546885616).

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

28841142064 is a wasteful number, since it uses less digits than its factorization.

28841142064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4227 (or 4214 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The spelling of 28841142064 in words is "twenty-eight billion, eight hundred forty-one million, one hundred forty-two thousand, sixty-four".