Base | Representation |
---|---|
bin | 11111000001001000001000 |
3 | 120022002202010 |
4 | 133001020020 |
5 | 4040143310 |
6 | 450135520 |
7 | 126053526 |
oct | 37011010 |
9 | 16262663 |
10 | 8131080 |
11 | 4654001 |
12 | 28815a0 |
13 | 18b8cb9 |
14 | 1119316 |
15 | aa9320 |
hex | 7c1208 |
8131080 has 32 divisors (see below), whose sum is σ = 24393600. Its totient is φ = 2168256.
The previous prime is 8131051. The next prime is 8131091. The reversal of 8131080 is 801318.
It is a happy number.
It is a super-2 number, since 2×81310802 = 132228923932800, which contains 22 as substring.
It is a nialpdrome in base 15.
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, 33760 + ... + 33999.
It is an arithmetic number, because the mean of its divisors is an integer number (762300).
Almost surely, 28131080 is an apocalyptic number.
It is an amenable number.
8131080 is an abundant number, since it is smaller than the sum of its proper divisors (16262520).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
8131080 is a wasteful number, since it uses less digits than its factorization.
8131080 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 67773 (or 67769 counting only the distinct ones).
The product of its (nonzero) digits is 192, while the sum is 21.
The square root of 8131080 is about 2851.5048658559. The cubic root of 8131080 is about 201.0864210934.
Adding to 8131080 its reverse (801318), we get a palindrome (8932398).
The spelling of 8131080 in words is "eight million, one hundred thirty-one thousand, eighty".
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