Base | Representation |
---|---|
bin | 1000011100010101010101 |
3 | 11011102221120 |
4 | 20130111111 |
5 | 1031310310 |
6 | 115234153 |
7 | 24545331 |
oct | 10342525 |
9 | 4142846 |
10 | 2213205 |
11 | 12818a5 |
12 | 8a8959 |
13 | 5c64b7 |
14 | 4187c1 |
15 | 2dab70 |
hex | 21c555 |
2213205 has 8 divisors (see below), whose sum is σ = 3541152. Its totient is φ = 1180368.
The previous prime is 2213203. The next prime is 2213209. The reversal of 2213205 is 5023122.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 2213205 - 21 = 2213203 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 147547 = 2213205 / (2 + 2 + 1 + 3 + 2 + 0 + 5).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2213201) 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, 73759 + ... + 73788.
It is an arithmetic number, because the mean of its divisors is an integer number (442644).
22213205 is an apocalyptic number.
It is an amenable number.
2213205 is a deficient number, since it is larger than the sum of its proper divisors (1327947).
2213205 is a wasteful number, since it uses less digits than its factorization.
2213205 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 147555.
The product of its (nonzero) digits is 120, while the sum is 15.
The square root of 2213205 is about 1487.6844423466. The cubic root of 2213205 is about 130.3188426026.
Adding to 2213205 its reverse (5023122), we get a palindrome (7236327).
The spelling of 2213205 in words is "two million, two hundred thirteen thousand, two hundred five".
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