Base | Representation |
---|---|
bin | 111111011110100000001 |
3 | 10220200020002 |
4 | 13323310001 |
5 | 1013030001 |
6 | 112325345 |
7 | 23452100 |
oct | 7736401 |
9 | 3820202 |
10 | 2080001 |
11 | 11a0810 |
12 | 843855 |
13 | 57a991 |
14 | 3c2037 |
15 | 2b146b |
hex | 1fbd01 |
2080001 has 24 divisors (see below), whose sum is σ = 2807136. Its totient is φ = 1518720.
The previous prime is 2079997. The next prime is 2080003. The reversal of 2080001 is 1000802.
2080001 = 1442 + 1452 + ... + 2092.
It is not a de Polignac number, because 2080001 - 22 = 2079997 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (11).
It is a Duffinian number.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (2080003) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9050 + ... + 9276.
It is an arithmetic number, because the mean of its divisors is an integer number (116964).
22080001 is an apocalyptic number.
2080001 is the 833-rd octagonal number.
It is an amenable number.
2080001 is a deficient number, since it is larger than the sum of its proper divisors (727135).
2080001 is a wasteful number, since it uses less digits than its factorization.
2080001 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 269 (or 262 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 11.
The square root of 2080001 is about 1442.2208568732. The cubic root of 2080001 is about 127.6501064339.
Adding to 2080001 its reverse (1000802), we get a palindrome (3080803).
The spelling of 2080001 in words is "two million, eighty thousand, one".
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