Base | Representation |
---|---|
bin | 1000011100110100101101 |
3 | 11011112200221 |
4 | 20130310231 |
5 | 1031341323 |
6 | 115251341 |
7 | 24554230 |
oct | 10346455 |
9 | 4145627 |
10 | 2215213 |
11 | 1283360 |
12 | 8a9b51 |
13 | 5c73a0 |
14 | 419417 |
15 | 2db55d |
hex | 21cd2d |
2215213 has 16 divisors (see below), whose sum is σ = 2975616. Its totient is φ = 1592640.
The previous prime is 2215211. The next prime is 2215217. The reversal of 2215213 is 3125122.
2215213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 2215213 - 21 = 2215211 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2215211) by changing a digit.
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 15 ways as a sum of consecutive naturals, for example, 106 + ... + 2107.
It is an arithmetic number, because the mean of its divisors is an integer number (185976).
22215213 is an apocalyptic number.
It is an amenable number.
2215213 is a deficient number, since it is larger than the sum of its proper divisors (760403).
2215213 is a wasteful number, since it uses less digits than its factorization.
2215213 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2244.
The product of its digits is 120, while the sum is 16.
The square root of 2215213 is about 1488.3591636430. The cubic root of 2215213 is about 130.3582426486.
Subtracting 2215213 from its reverse (3125122), we obtain a palindrome (909909).
The spelling of 2215213 in words is "two million, two hundred fifteen thousand, two hundred thirteen".
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