28030489344 has 864 divisors, whose sum is σ = 103495601664. Its totient is φ = 7445053440.

The previous prime is 28030489273. The next prime is 28030489381. The reversal of 28030489344 is 44398403082.

It is a tau number, because it is divible by the number of its divisors (864).

It is a self number, because there is not a number n which added to its sum of digits gives 28030489344.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 204602044 + ... + 204602180.

It is an arithmetic number, because the mean of its divisors is an integer number (119786576).

Almost surely, 2^28030489344 is an apocalyptic number.

28030489344 is a gapful number since it is divisible by the number (24) 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 28030489344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51747800832).

28030489344 is an abundant number, since it is smaller than the sum of its proper divisors (75465112320).

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

28030489344 is a wasteful number, since it uses less digits than its factorization.

28030489344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 28030489344 in words is "twenty-eight billion, thirty million, four hundred eighty-nine thousand, three hundred forty-four".