Base | Representation |
---|---|
bin | 11000111000011… |
… | …10010000001111 |
3 | 112112202022212211 |
4 | 30130032100033 |
5 | 411413200012 |
6 | 32413411251 |
7 | 5113063501 |
oct | 1434162017 |
9 | 475668784 |
10 | 208725007 |
11 | a7902207 |
12 | 59a99b27 |
13 | 3432072a |
14 | 1da13d71 |
15 | 134ce6a7 |
hex | c70e40f |
208725007 has 8 divisors (see below), whose sum is σ = 210978432. Its totient is φ = 206477400.
The previous prime is 208725001. The next prime is 208725059. The reversal of 208725007 is 700527802.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-208725007 is a prime.
It is a super-2 number, since 2×2087250072 = 87132257094300098, which contains 22 as substring.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 208725007.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (208725001) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137382 + ... + 138892.
It is an arithmetic number, because the mean of its divisors is an integer number (26372304).
Almost surely, 2208725007 is an apocalyptic number.
208725007 is a deficient number, since it is larger than the sum of its proper divisors (2253425).
208725007 is a wasteful number, since it uses less digits than its factorization.
208725007 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2909.
The product of its (nonzero) digits is 7840, while the sum is 31.
The square root of 208725007 is about 14447.3183324796. The cubic root of 208725007 is about 593.1868225623.
The spelling of 208725007 in words is "two hundred eight million, seven hundred twenty-five thousand, seven".
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