Base | Representation |
---|---|
bin | 1001100111011… |
… | …11001000001101 |
3 | 12121210112010220 |
4 | 10303233020031 |
5 | 131122434440 |
6 | 12001021553 |
7 | 1666460064 |
oct | 463571015 |
9 | 177715126 |
10 | 80671245 |
11 | 4159a556 |
12 | 230248b9 |
13 | 13936a85 |
14 | a9dd1db |
15 | 71378d0 |
hex | 4cef20d |
80671245 has 32 divisors (see below), whose sum is σ = 137625600. Its totient is φ = 40233024.
The previous prime is 80671229. The next prime is 80671271. The reversal of 80671245 is 54217608.
It is not a de Polignac number, because 80671245 - 24 = 80671229 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20724 + ... + 24306.
It is an arithmetic number, because the mean of its divisors is an integer number (4300800).
Almost surely, 280671245 is an apocalyptic number.
It is an amenable number.
80671245 is a deficient number, since it is larger than the sum of its proper divisors (56954355).
80671245 is a wasteful number, since it uses less digits than its factorization.
80671245 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3689.
The product of its (nonzero) digits is 13440, while the sum is 33.
The square root of 80671245 is about 8981.7172634191. The cubic root of 80671245 is about 432.0887109915.
The spelling of 80671245 in words is "eighty million, six hundred seventy-one thousand, two hundred forty-five".
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