Base | Representation |
---|---|
bin | 1111010011111… |
… | …11100101111000 |
3 | 22221200212202020 |
4 | 13221333211320 |
5 | 230340331023 |
6 | 20425034440 |
7 | 3116540361 |
oct | 751774570 |
9 | 287625666 |
10 | 128448888 |
11 | 66562607 |
12 | 37025a20 |
13 | 207c4779 |
14 | 130b8b68 |
15 | b423de3 |
hex | 7a7f978 |
128448888 has 32 divisors (see below), whose sum is σ = 332197200. Its totient is φ = 41339648.
The previous prime is 128448863. The next prime is 128448907. The reversal of 128448888 is 888844821.
It is a nude number because it is divisible by every one of its digits.
It is a self number, because there is not a number n which added to its sum of digits gives 128448888.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91581 + ... + 92972.
Almost surely, 2128448888 is an apocalyptic number.
It is an amenable number.
128448888 is an abundant number, since it is smaller than the sum of its proper divisors (203748312).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128448888 is a wasteful number, since it uses less digits than its factorization.
128448888 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 184591 (or 184587 counting only the distinct ones).
The product of its digits is 1048576, while the sum is 51.
The square root of 128448888 is about 11333.5293708535. The cubic root of 128448888 is about 504.5568612011.
The spelling of 128448888 in words is "one hundred twenty-eight million, four hundred forty-eight thousand, eight hundred eighty-eight".
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