Base | Representation |
---|---|
bin | 110101100011… |
… | …1011110110000 |
3 | 1221211121120210 |
4 | 1223013132300 |
5 | 24142030143 |
6 | 2441504120 |
7 | 460451013 |
oct | 153073660 |
9 | 57747523 |
10 | 28080048 |
11 | 14939a57 |
12 | 94a2040 |
13 | 5a82119 |
14 | 3a2d37a |
15 | 26ea033 |
hex | 1ac77b0 |
28080048 has 80 divisors (see below), whose sum is σ = 75995136. Its totient is φ = 8924160.
The previous prime is 28080037. The next prime is 28080053. The reversal of 28080048 is 84008082.
It is a junction number, because it is equal to n+sod(n) for n = 28079997 and 28080024.
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, 168061 + ... + 168227.
Almost surely, 228080048 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 28080048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37997568).
28080048 is an abundant number, since it is smaller than the sum of its proper divisors (47915088).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28080048 is a wasteful number, since it uses less digits than its factorization.
28080048 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 322 (or 316 counting only the distinct ones).
The product of its (nonzero) digits is 4096, while the sum is 30.
The square root of 28080048 is about 5299.0610489029. The cubic root of 28080048 is about 303.9479943356.
The spelling of 28080048 in words is "twenty-eight million, eighty thousand, forty-eight".
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