Base | Representation |
---|---|
bin | 101111111111111… |
… | …011100010101011 |
3 | 2002010021212121110 |
4 | 233333323202223 |
5 | 3122123204412 |
6 | 211524041403 |
7 | 25645556511 |
oct | 5777734253 |
9 | 2063255543 |
10 | 805288107 |
11 | 383622968 |
12 | 1a5833263 |
13 | caab4b50 |
14 | 78d444b1 |
15 | 4aa6dd3c |
hex | 2fffb8ab |
805288107 has 8 divisors (see below), whose sum is σ = 1156311184. Its totient is φ = 495561888.
The previous prime is 805288073. The next prime is 805288139. The reversal of 805288107 is 701882508.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 805288107 - 28 = 805287851 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 20648413 = 805288107 / (8 + 0 + 5 + 2 + 8 + 8 + 1 + 0 + 7).
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (805288157) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10324168 + ... + 10324245.
It is an arithmetic number, because the mean of its divisors is an integer number (144538898).
Almost surely, 2805288107 is an apocalyptic number.
805288107 is a deficient number, since it is larger than the sum of its proper divisors (351023077).
805288107 is a wasteful number, since it uses less digits than its factorization.
805288107 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 20648429.
The product of its (nonzero) digits is 35840, while the sum is 39.
The square root of 805288107 is about 28377.5986827638. The cubic root of 805288107 is about 930.3587112014.
The spelling of 805288107 in words is "eight hundred five million, two hundred eighty-eight thousand, one hundred seven".
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