Base | Representation |
---|---|
bin | 1111010100000… |
… | …00110111001000 |
3 | 22221201010212211 |
4 | 13222000313020 |
5 | 230341012323 |
6 | 20425114504 |
7 | 3116561500 |
oct | 752006710 |
9 | 287633784 |
10 | 128454088 |
11 | 66566504 |
12 | 37028a34 |
13 | 207c6c49 |
14 | 130baa00 |
15 | b42570d |
hex | 7a80dc8 |
128454088 has 24 divisors (see below), whose sum is σ = 280174950. Its totient is φ = 55051584.
The previous prime is 128454083. The next prime is 128454089. The reversal of 128454088 is 880454821.
It can be written as a sum of positive squares in only one way, i.e., 84603204 + 43850884 = 9198^2 + 6622^2 .
It is a self number, because there is not a number n which added to its sum of digits gives 128454088.
It is not an unprimeable number, because it can be changed into a prime (128454083) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 163453 + ... + 164236.
Almost surely, 2128454088 is an apocalyptic number.
It is an amenable number.
128454088 is an abundant number, since it is smaller than the sum of its proper divisors (151720862).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128454088 is a wasteful number, since it uses less digits than its factorization.
128454088 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 327709 (or 327698 counting only the distinct ones).
The product of its (nonzero) digits is 81920, while the sum is 40.
The square root of 128454088 is about 11333.7587763284. The cubic root of 128454088 is about 504.5636697725.
The spelling of 128454088 in words is "one hundred twenty-eight million, four hundred fifty-four thousand, eighty-eight".
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