Base | Representation |
---|---|
bin | 101110100101… |
… | …110110100010 |
3 | 211222112000000 |
4 | 232211312202 |
5 | 11111314131 |
6 | 1113440430 |
7 | 205546233 |
oct | 56456642 |
9 | 24875000 |
10 | 12213666 |
11 | 6992343 |
12 | 4110116 |
13 | 26b832a |
14 | 189d08a |
15 | 1113ce6 |
hex | ba5da2 |
12213666 has 28 divisors (see below), whose sum is σ = 27471462. Its totient is φ = 4070736.
The previous prime is 12213661. The next prime is 12213673. The reversal of 12213666 is 66631221.
It can be written as a sum of positive squares in only one way, i.e., 11758041 + 455625 = 3429^2 + 675^2 .
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a nude number because it is divisible by every one of its digits.
It is not an unprimeable number, because it can be changed into a prime (12213661) 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 13 ways as a sum of consecutive naturals, for example, 2731 + ... + 5646.
Almost surely, 212213666 is an apocalyptic number.
12213666 is an abundant number, since it is smaller than the sum of its proper divisors (15257796).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12213666 is an frugal number, since it uses more digits than its factorization.
12213666 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8397 (or 8382 counting only the distinct ones).
The product of its digits is 2592, while the sum is 27.
The square root of 12213666 is about 3494.8055739912. The cubic root of 12213666 is about 230.2936765280.
Adding to 12213666 its reverse (66631221), we get a palindrome (78844887).
The spelling of 12213666 in words is "twelve million, two hundred thirteen thousand, six hundred sixty-six".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.066 sec. • engine limits •