Base | Representation |
---|---|
bin | 11111001101111… |
… | …10000110110101 |
3 | 200020202120201210 |
4 | 33212332012311 |
5 | 1014014432401 |
6 | 41552512033 |
7 | 6326615226 |
oct | 1746760665 |
9 | 606676653 |
10 | 261874101 |
11 | 124903985 |
12 | 7384b619 |
13 | 4233c2b8 |
14 | 26acb24d |
15 | 17ecc4d6 |
hex | f9be1b5 |
261874101 has 16 divisors (see below), whose sum is σ = 356230784. Its totient is φ = 171085824.
The previous prime is 261874099. The next prime is 261874117. The reversal of 261874101 is 101478162.
It is not a de Polignac number, because 261874101 - 21 = 261874099 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (261874181) 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, 25605 + ... + 34341.
It is an arithmetic number, because the mean of its divisors is an integer number (22264424).
Almost surely, 2261874101 is an apocalyptic number.
It is an amenable number.
261874101 is a deficient number, since it is larger than the sum of its proper divisors (94356683).
261874101 is a wasteful number, since it uses less digits than its factorization.
261874101 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8940.
The product of its (nonzero) digits is 2688, while the sum is 30.
The square root of 261874101 is about 16182.5245558287. The cubic root of 261874101 is about 639.7802802077.
The spelling of 261874101 in words is "two hundred sixty-one million, eight hundred seventy-four thousand, one hundred one".
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