Base | Representation |
---|---|
bin | 11011001110011… |
… | …10000100111000 |
3 | 120220202011102200 |
4 | 31213032010320 |
5 | 431431310310 |
6 | 34355030200 |
7 | 5442145500 |
oct | 1547160470 |
9 | 526664380 |
10 | 228385080 |
11 | 107a10100 |
12 | 6459b360 |
13 | 38415201 |
14 | 22490a00 |
15 | 150b49c0 |
hex | d9ce138 |
228385080 has 432 divisors, whose sum is σ = 957935160. Its totient is φ = 47013120.
The previous prime is 228385067. The next prime is 228385097. The reversal of 228385080 is 80583822.
228385080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 2134387 + ... + 2134493.
Almost surely, 2228385080 is an apocalyptic number.
228385080 is a gapful number since it is divisible by the number (20) 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 228385080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (478967580).
228385080 is an abundant number, since it is smaller than the sum of its proper divisors (729550080).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
228385080 is a wasteful number, since it uses less digits than its factorization.
228385080 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 160 (or 135 counting only the distinct ones).
The product of its (nonzero) digits is 30720, while the sum is 36.
The square root of 228385080 is about 15112.4147640276. The cubic root of 228385080 is about 611.2552134249.
The spelling of 228385080 in words is "two hundred twenty-eight million, three hundred eighty-five thousand, eighty".
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