Base | Representation |
---|---|
bin | 1111010111010… |
… | …10011000011101 |
3 | 22222112002202201 |
4 | 13223222120131 |
5 | 230443330201 |
6 | 20442251501 |
7 | 3123341545 |
oct | 753523035 |
9 | 288462681 |
10 | 128886301 |
11 | 66831205 |
12 | 371b6b91 |
13 | 209188ab |
14 | 13190325 |
15 | b4ad801 |
hex | 7aea61d |
128886301 has 12 divisors (see below), whose sum is σ = 133295868. Its totient is φ = 124577024.
The previous prime is 128886293. The next prime is 128886337. The reversal of 128886301 is 103688821.
It can be written as a sum of positive squares in 2 ways, for example, as 73085401 + 55800900 = 8549^2 + 7470^2 .
It is not a de Polignac number, because 128886301 - 23 = 128886293 is a prime.
It is a super-2 number, since 2×1288863012 = 33223357170925202, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (128889301) 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, 364941 + ... + 365293.
It is an arithmetic number, because the mean of its divisors is an integer number (11107989).
Almost surely, 2128886301 is an apocalyptic number.
It is an amenable number.
128886301 is a deficient number, since it is larger than the sum of its proper divisors (4409567).
128886301 is an frugal number, since it uses more digits than its factorization.
128886301 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 572 (or 489 counting only the distinct ones).
The product of its (nonzero) digits is 18432, while the sum is 37.
The square root of 128886301 is about 11352.8102688277. The cubic root of 128886301 is about 505.1289426646.
The spelling of 128886301 in words is "one hundred twenty-eight million, eight hundred eighty-six thousand, three hundred one".
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