Base | Representation |
---|---|
bin | 11010001011011000… |
… | …111001000101000000 |
3 | 2200112220211201221020 |
4 | 122023120321011000 |
5 | 430031220041143 |
6 | 20525055425440 |
7 | 2013360064254 |
oct | 321330710500 |
9 | 80486751836 |
10 | 28108362048 |
11 | 10a1448a488 |
12 | 5545525280 |
13 | 285c4cb6c0 |
14 | 150911a264 |
15 | ae7a1d883 |
hex | 68b639140 |
28108362048 has 112 divisors (see below), whose sum is σ = 80668002240. Its totient is φ = 8586399744.
The previous prime is 28108362001. The next prime is 28108362053. The reversal of 28108362048 is 84026380182.
It is a happy number.
It is a congruent number.
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, 306436 + ... + 387452.
It is an arithmetic number, because the mean of its divisors is an integer number (720250020).
Almost surely, 228108362048 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 28108362048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40334001120).
28108362048 is an abundant number, since it is smaller than the sum of its proper divisors (52559640192).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28108362048 is a wasteful number, since it uses less digits than its factorization.
28108362048 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 81184 (or 81174 counting only the distinct ones).
The product of its (nonzero) digits is 147456, while the sum is 42.
The spelling of 28108362048 in words is "twenty-eight billion, one hundred eight million, three hundred sixty-two thousand, forty-eight".
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