Base | Representation |
---|---|
bin | 1001101010100… |
… | …00110000000010 |
3 | 12122112211122120 |
4 | 10311100300002 |
5 | 131223233411 |
6 | 12013345110 |
7 | 2003043624 |
oct | 465206002 |
9 | 178484576 |
10 | 81071106 |
11 | 41842a16 |
12 | 23198196 |
13 | 13a46a8c |
14 | aaa4c14 |
15 | 71b6106 |
hex | 4d50c02 |
81071106 has 16 divisors (see below), whose sum is σ = 162243648. Its totient is φ = 27006800.
The previous prime is 81071077. The next prime is 81071129. The reversal of 81071106 is 60117018.
It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a Curzon number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9691 + ... + 16001.
It is an arithmetic number, because the mean of its divisors is an integer number (10140228).
Almost surely, 281071106 is an apocalyptic number.
81071106 is an abundant number, since it is smaller than the sum of its proper divisors (81172542).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
81071106 is a wasteful number, since it uses less digits than its factorization.
81071106 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8457.
The product of its (nonzero) digits is 336, while the sum is 24.
The square root of 81071106 is about 9003.9494667618. The cubic root of 81071106 is about 432.8014422082.
The spelling of 81071106 in words is "eighty-one million, seventy-one thousand, one hundred six".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.072 sec. • engine limits •