28458814384 has 320 divisors, whose sum is σ = 79864888320. Its totient is φ = 9455616000.

The previous prime is 28458814369. The next prime is 28458814511. The reversal of 28458814384 is 48341885482.

It is a super-2 number, since 2×28458814384² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12475324 + ... + 12477604.

It is an arithmetic number, because the mean of its divisors is an integer number (249577776).

Almost surely, 2^28458814384 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 28458814384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39932444160).

28458814384 is an abundant number, since it is smaller than the sum of its proper divisors (51406073936).

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

28458814384 is a wasteful number, since it uses less digits than its factorization.

28458814384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380 (or 2374 counting only the distinct ones).

The product of its digits is 7864320, while the sum is 55.

The spelling of 28458814384 in words is "twenty-eight billion, four hundred fifty-eight million, eight hundred fourteen thousand, three hundred eighty-four".