Base | Representation |
---|---|
bin | 100110001101… |
… | …0001011111001 |
3 | 1101200122021022 |
4 | 1030122023321 |
5 | 20111431301 |
6 | 1553152225 |
7 | 332153042 |
oct | 114321371 |
9 | 41618238 |
10 | 20030201 |
11 | 10340a94 |
12 | 685b675 |
13 | 41c40b9 |
14 | 29358c9 |
15 | 1b59d1b |
hex | 131a2f9 |
20030201 has 4 divisors (see below), whose sum is σ = 20064912. Its totient is φ = 19995492.
The previous prime is 20030191. The next prime is 20030203. The reversal of 20030201 is 10203002.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10203002 = 2 ⋅5101501.
It is a cyclic number.
It is not a de Polignac number, because 20030201 - 26 = 20030137 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (20030203) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16475 + ... + 17648.
It is an arithmetic number, because the mean of its divisors is an integer number (5016228).
Almost surely, 220030201 is an apocalyptic number.
It is an amenable number.
20030201 is a deficient number, since it is larger than the sum of its proper divisors (34711).
20030201 is an equidigital number, since it uses as much as digits as its factorization.
20030201 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 34710.
The product of its (nonzero) digits is 12, while the sum is 8.
The square root of 20030201 is about 4475.5112557115. The cubic root of 20030201 is about 271.5783231550.
Adding to 20030201 its reverse (10203002), we get a palindrome (30233203).
The spelling of 20030201 in words is "twenty million, thirty thousand, two hundred one".
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