28448879056 has 160 divisors (see below), whose sum is σ = 65403591680. Its totient is φ = 11869286400.

The previous prime is 28448879033. The next prime is 28448879131. The reversal of 28448879056 is 65097884482.

It is a super-2 number, since 2×28448879056² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28448878985 and 28448879003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8941786 + ... + 8944966.

It is an arithmetic number, because the mean of its divisors is an integer number (408772448).

Almost surely, 2^28448879056 is an apocalyptic number.

28448879056 is a gapful number since it is divisible by the number (26) 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 28448879056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32701795840).

28448879056 is an abundant number, since it is smaller than the sum of its proper divisors (36954712624).

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

28448879056 is a wasteful number, since it uses less digits than its factorization.

28448879056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325 (or 3319 counting only the distinct ones).

The product of its (nonzero) digits is 30965760, while the sum is 61.

The spelling of 28448879056 in words is "twenty-eight billion, four hundred forty-eight million, eight hundred seventy-nine thousand, fifty-six".