Base | Representation |
---|---|
bin | 1111010100101… |
… | …11110100100010 |
3 | 22221212220212212 |
4 | 13222113310202 |
5 | 230402020010 |
6 | 20431122122 |
7 | 3120432614 |
oct | 752276442 |
9 | 287786785 |
10 | 128548130 |
11 | 66620127 |
12 | 37073342 |
13 | 2082a9a9 |
14 | 13102db4 |
15 | b443505 |
hex | 7a97d22 |
128548130 has 24 divisors (see below), whose sum is σ = 233515548. Its totient is φ = 50950368.
The previous prime is 128548093. The next prime is 128548139. The reversal of 128548130 is 31845821.
It can be written as a sum of positive squares in 2 ways, for example, as 127757809 + 790321 = 11303^2 + 889^2 .
It is not an unprimeable number, because it can be changed into a prime (128548139) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160892 + ... + 161688.
Almost surely, 2128548130 is an apocalyptic number.
128548130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
128548130 is a deficient number, since it is larger than the sum of its proper divisors (104967418).
128548130 is an equidigital number, since it uses as much as digits as its factorization.
128548130 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1058 (or 931 counting only the distinct ones).
The product of its (nonzero) digits is 7680, while the sum is 32.
The square root of 128548130 is about 11337.9067732981. The cubic root of 128548130 is about 504.6867710885.
The spelling of 128548130 in words is "one hundred twenty-eight million, five hundred forty-eight thousand, one hundred thirty".
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