28224919344 has 80 divisors (see below), whose sum is σ = 74470233600. Its totient is φ = 9208412928.

The previous prime is 28224919319. The next prime is 28224919381. The reversal of 28224919344 is 44391942282.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 28224919293 and 28224919302.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1052697 + ... + 1079175.

It is an arithmetic number, because the mean of its divisors is an integer number (930877920).

Almost surely, 2^28224919344 is an apocalyptic number.

28224919344 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 28224919344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37235116800).

28224919344 is an abundant number, since it is smaller than the sum of its proper divisors (46245314256).

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

28224919344 is a wasteful number, since it uses less digits than its factorization.

28224919344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26962 (or 26956 counting only the distinct ones).

The product of its digits is 995328, while the sum is 48.

The spelling of 28224919344 in words is "twenty-eight billion, two hundred twenty-four million, nine hundred nineteen thousand, three hundred forty-four".