Base | Representation |
---|---|
bin | 111111100001111000000 |
3 | 10220202121001 |
4 | 13330033000 |
5 | 1013103403 |
6 | 112341344 |
7 | 23460115 |
oct | 7741700 |
9 | 3822531 |
10 | 2081728 |
11 | 11a2040 |
12 | 844854 |
13 | 57b6bc |
14 | 3c290c |
15 | 2b1c1d |
hex | 1fc3c0 |
2081728 has 28 divisors (see below), whose sum is σ = 4507992. Its totient is φ = 945920.
The previous prime is 2081719. The next prime is 2081749. The reversal of 2081728 is 8271802.
It is a zygodrome in base 2.
It is a junction number, because it is equal to n+sod(n) for n = 2081696 and 2081705.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775 + ... + 2182.
22081728 is an apocalyptic number.
It is an amenable number.
2081728 is an abundant number, since it is smaller than the sum of its proper divisors (2426264).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2081728 is a wasteful number, since it uses less digits than its factorization.
2081728 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2980 (or 2970 counting only the distinct ones).
The product of its (nonzero) digits is 1792, while the sum is 28.
The square root of 2081728 is about 1442.8194620257. The cubic root of 2081728 is about 127.6854254473.
It can be divided in two parts, 2081 and 728, that added together give a square (2809 = 532).
The spelling of 2081728 in words is "two million, eighty-one thousand, seven hundred twenty-eight".
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