Base | Representation |
---|---|
bin | 1111010101000… |
… | …10100011010000 |
3 | 22221222011011122 |
4 | 13222202203100 |
5 | 230404421310 |
6 | 20432101412 |
7 | 3121005011 |
oct | 752424320 |
9 | 287864148 |
10 | 128592080 |
11 | 66650151 |
12 | 37094868 |
13 | 208449b6 |
14 | 13115008 |
15 | b451555 |
hex | 7aa28d0 |
128592080 has 80 divisors (see below), whose sum is σ = 330407424. Its totient is φ = 46295040.
The previous prime is 128592067. The next prime is 128592083. The reversal of 128592080 is 80295821.
It is a tau number, because it is divible by the number of its divisors (80).
It is a self number, because there is not a number n which added to its sum of digits gives 128592080.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (128592083) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29225 + ... + 33335.
Almost surely, 2128592080 is an apocalyptic number.
128592080 is a gapful number since it is divisible by the number (10) 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 128592080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165203712).
128592080 is an abundant number, since it is smaller than the sum of its proper divisors (201815344).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128592080 is a wasteful number, since it uses less digits than its factorization.
128592080 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4164 (or 4158 counting only the distinct ones).
The product of its (nonzero) digits is 11520, while the sum is 35.
The square root of 128592080 is about 11339.8447961160. The cubic root of 128592080 is about 504.7442812112.
The spelling of 128592080 in words is "one hundred twenty-eight million, five hundred ninety-two thousand, eighty".
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