Base | Representation |
---|---|
bin | 1000101011011… |
… | …10111101000000 |
3 | 12001222221100020 |
4 | 10111232331000 |
5 | 122114244313 |
6 | 11120253440 |
7 | 1542561666 |
oct | 425567500 |
9 | 161887306 |
10 | 72806208 |
11 | 38108422 |
12 | 20471280 |
13 | 12111bc7 |
14 | 9952c36 |
15 | 65d2323 |
hex | 456ef40 |
72806208 has 28 divisors (see below), whose sum is σ = 192633600. Its totient is φ = 24268672.
The previous prime is 72806207. The next prime is 72806213. The reversal of 72806208 is 80260827.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (72806203) 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 3 ways as a sum of consecutive naturals, for example, 189408 + ... + 189791.
Almost surely, 272806208 is an apocalyptic number.
It is an amenable number.
72806208 is an abundant number, since it is smaller than the sum of its proper divisors (119827392).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
72806208 is a wasteful number, since it uses less digits than its factorization.
72806208 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 379214 (or 379204 counting only the distinct ones).
The product of its (nonzero) digits is 10752, while the sum is 33.
The square root of 72806208 is about 8532.6553897365. The cubic root of 72806208 is about 417.5637642697.
The spelling of 72806208 in words is "seventy-two million, eight hundred six thousand, two hundred eight".
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