Base | Representation |
---|---|
bin | 100101001111000010001 |
3 | 2021222200101 |
4 | 10221320101 |
5 | 303020423 |
6 | 42052401 |
7 | 13241116 |
oct | 4517021 |
9 | 2258611 |
10 | 1220113 |
11 | 763764 |
12 | 4aa101 |
13 | 33947b |
14 | 23a90d |
15 | 1917ad |
hex | 129e11 |
1220113 has 4 divisors (see below), whose sum is σ = 1243188. Its totient is φ = 1197040.
The previous prime is 1220099. The next prime is 1220147. The reversal of 1220113 is 3110221.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 494209 + 725904 = 703^2 + 852^2 .
It is a cyclic number.
It is not a de Polignac number, because 1220113 - 213 = 1211921 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 1220113.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1221113) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11458 + ... + 11563.
It is an arithmetic number, because the mean of its divisors is an integer number (310797).
21220113 is an apocalyptic number.
It is an amenable number.
1220113 is a deficient number, since it is larger than the sum of its proper divisors (23075).
1220113 is an equidigital number, since it uses as much as digits as its factorization.
1220113 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 23074.
The product of its (nonzero) digits is 12, while the sum is 10.
The square root of 1220113 is about 1104.5872532308. The cubic root of 1220113 is about 106.8562719256.
Adding to 1220113 its reverse (3110221), we get a palindrome (4330334).
The spelling of 1220113 in words is "one million, two hundred twenty thousand, one hundred thirteen".
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