Base | Representation |
---|---|
bin | 1001110011011… |
… | …01100011110001 |
3 | 12201202002220001 |
4 | 10321231203301 |
5 | 132023101211 |
6 | 12054350001 |
7 | 2016003001 |
oct | 471554361 |
9 | 181662801 |
10 | 82237681 |
11 | 4246a429 |
12 | 2365b301 |
13 | 14064a66 |
14 | acca001 |
15 | 7346ac1 |
hex | 4e6d8f1 |
82237681 has 8 divisors (see below), whose sum is σ = 88034400. Its totient is φ = 76587840.
The previous prime is 82237669. The next prime is 82237693. The reversal of 82237681 is 18673228.
It is an interprime number because it is at equal distance from previous prime (82237669) and next prime (82237693).
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 82237681 - 27 = 82237553 is a prime.
It is a super-2 number, since 2×822376812 = 13526072352515522, 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 82237681.
It is not an unprimeable number, because it can be changed into a prime (82237601) 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, 35560 + ... + 37801.
It is an arithmetic number, because the mean of its divisors is an integer number (11004300).
Almost surely, 282237681 is an apocalyptic number.
It is an amenable number.
82237681 is a deficient number, since it is larger than the sum of its proper divisors (5796719).
82237681 is a wasteful number, since it uses less digits than its factorization.
82237681 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 73439.
The product of its digits is 32256, while the sum is 37.
The square root of 82237681 is about 9068.4993797210. The cubic root of 82237681 is about 434.8675000510.
It can be divided in two parts, 822 and 37681, that added together give a triangular number (38503 = T277).
The spelling of 82237681 in words is "eighty-two million, two hundred thirty-seven thousand, six hundred eighty-one".
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