Base | Representation |
---|---|
bin | 1111000011010110… |
… | …11110101101100101 |
3 | 202212012021110200220 |
4 | 13201223132231211 |
5 | 113022244121020 |
6 | 3413520554553 |
7 | 404155253136 |
oct | 74153365545 |
9 | 22765243626 |
10 | 8081238885 |
11 | 3477715425 |
12 | 1696482a59 |
13 | 9ba318375 |
14 | 5693b3c8d |
15 | 3246e6240 |
hex | 1e1adeb65 |
8081238885 has 32 divisors (see below), whose sum is σ = 13013360640. Its totient is φ = 4282286400.
The previous prime is 8081238833. The next prime is 8081238887. The reversal of 8081238885 is 5888321808.
It is not a de Polignac number, because 8081238885 - 211 = 8081236837 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (8081238887) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1757940 + ... + 1762530.
It is an arithmetic number, because the mean of its divisors is an integer number (406667520).
Almost surely, 28081238885 is an apocalyptic number.
It is an amenable number.
8081238885 is a deficient number, since it is larger than the sum of its proper divisors (4932121755).
8081238885 is a wasteful number, since it uses less digits than its factorization.
8081238885 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5329.
The product of its (nonzero) digits is 983040, while the sum is 51.
The square root of 8081238885 is about 89895.7111602105. The cubic root of 8081238885 is about 2006.7471196753.
The spelling of 8081238885 in words is "eight billion, eighty-one million, two hundred thirty-eight thousand, eight hundred eighty-five".
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