Base | Representation |
---|---|
bin | 11111001000110… |
… | …11000100010000 |
3 | 200012111122122222 |
4 | 33210123010100 |
5 | 1013332100123 |
6 | 41530320212 |
7 | 6321134240 |
oct | 1744330420 |
9 | 605448588 |
10 | 261206288 |
11 | 124498172 |
12 | 73589068 |
13 | 42167345 |
14 | 26995b20 |
15 | 17de96c8 |
hex | f91b110 |
261206288 has 40 divisors (see below), whose sum is σ = 579754560. Its totient is φ = 111680640.
The previous prime is 261206269. The next prime is 261206303. The reversal of 261206288 is 882602162.
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, 49103 + ... + 54161.
It is an arithmetic number, because the mean of its divisors is an integer number (14493864).
Almost surely, 2261206288 is an apocalyptic number.
261206288 is a gapful number since it is divisible by the number (28) formed by its first and last digit.
It is an amenable number.
261206288 is an abundant number, since it is smaller than the sum of its proper divisors (318548272).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
261206288 is a wasteful number, since it uses less digits than its factorization.
261206288 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5535 (or 5529 counting only the distinct ones).
The product of its (nonzero) digits is 18432, while the sum is 35.
The square root of 261206288 is about 16161.8776136933. The cubic root of 261206288 is about 639.2359763022.
The spelling of 261206288 in words is "two hundred sixty-one million, two hundred six thousand, two hundred eighty-eight".
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