28026330880 has 72 divisors (see below), whose sum is σ = 67174833600. Its totient is φ = 11203350528.

The previous prime is 28026330823. The next prime is 28026330881. The reversal of 28026330880 is 8803362082.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28026330881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2283801 + ... + 2296039.

It is an arithmetic number, because the mean of its divisors is an integer number (932983800).

Almost surely, 2^28026330880 is an apocalyptic number.

28026330880 is a gapful number since it is divisible by the number (20) 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 28026330880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33587416800).

28026330880 is an abundant number, since it is smaller than the sum of its proper divisors (39148502720).

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

28026330880 is a wasteful number, since it uses less digits than its factorization.

28026330880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14049 (or 14035 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 28026330880 in words is "twenty-eight billion, twenty-six million, three hundred thirty thousand, eight hundred eighty".