28448873280 has 336 divisors, whose sum is σ = 104322067200. Its totient is φ = 7095029760.

The previous prime is 28448873269. The next prime is 28448873281. The reversal of 28448873280 is 8237884482.

28448873280 is a `hidden beast` number, since 2 + 84 + 488 + 7 + 3 + 2 + 80 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28448873281) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4319590 + ... + 4326170.

Almost surely, 2^28448873280 is an apocalyptic number.

28448873280 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 28448873280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52161033600).

28448873280 is an abundant number, since it is smaller than the sum of its proper divisors (75873193920).

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

28448873280 is a wasteful number, since it uses less digits than its factorization.

28448873280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6702 (or 6689 counting only the distinct ones).

The product of its (nonzero) digits is 5505024, while the sum is 54.

The spelling of 28448873280 in words is "twenty-eight billion, four hundred forty-eight million, eight hundred seventy-three thousand, two hundred eighty".