28558463808 has 336 divisors, whose sum is σ = 91402741248. Its totient is φ = 7838208000.

The previous prime is 28558463807. The next prime is 28558463831. The reversal of 28558463808 is 80836485582.

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28558463807) 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, 52788018 + ... + 52788558.

It is an arithmetic number, because the mean of its divisors is an integer number (272031968).

Almost surely, 2^28558463808 is an apocalyptic number.

28558463808 is a gapful number since it is divisible by the number (28) 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 28558463808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45701370624).

28558463808 is an abundant number, since it is smaller than the sum of its proper divisors (62844277440).

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

28558463808 is a wasteful number, since it uses less digits than its factorization.

28558463808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 14745600, while the sum is 57.

The spelling of 28558463808 in words is "twenty-eight billion, five hundred fifty-eight million, four hundred sixty-three thousand, eight hundred eight".