Base | Representation |
---|---|
bin | 11111000110010000010001 |
3 | 120100011112221 |
4 | 133012100101 |
5 | 4041331311 |
6 | 450421041 |
7 | 126202000 |
oct | 37062021 |
9 | 16304487 |
10 | 8152081 |
11 | 4668863 |
12 | 2891781 |
13 | 18c5722 |
14 | 1122c37 |
15 | ab0671 |
hex | 7c6411 |
8152081 has 8 divisors (see below), whose sum is σ = 9507200. Its totient is φ = 6987204.
The previous prime is 8152033. The next prime is 8152093. The reversal of 8152081 is 1802518.
It is not a de Polignac number, because 8152081 - 27 = 8151953 is a prime.
It is a super-2 number, since 2×81520812 = 132912849261122, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (8152021) 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, 11541 + ... + 12226.
It is an arithmetic number, because the mean of its divisors is an integer number (1188400).
Almost surely, 28152081 is an apocalyptic number.
It is an amenable number.
8152081 is a deficient number, since it is larger than the sum of its proper divisors (1355119).
8152081 is an equidigital number, since it uses as much as digits as its factorization.
8152081 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 23788 (or 23774 counting only the distinct ones).
The product of its (nonzero) digits is 640, while the sum is 25.
The square root of 8152081 is about 2855.1849327145. The cubic root of 8152081 is about 201.2593946465.
Adding to 8152081 its reverse (1802518), we get a palindrome (9954599).
The spelling of 8152081 in words is "eight million, one hundred fifty-two thousand, eighty-one".
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