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12270223 = 71752889
BaseRepresentation
bin101110110011…
…101010001111
3212002101120201
4232303222033
511120121343
61114554331
7206203150
oct56635217
925071521
1012270223
116a20889
1241389a7
132707cb4
1418b5927
15112594d
hexbb3a8f

12270223 has 4 divisors (see below), whose sum is σ = 14023120. Its totient is φ = 10517328.

The previous prime is 12270221. The next prime is 12270229. The reversal of 12270223 is 32207221.

12270223 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32207221 = 223144427.

It is a cyclic number.

It is not a de Polignac number, because 12270223 - 21 = 12270221 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 12270223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12270221) 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, 876438 + ... + 876451.

It is an arithmetic number, because the mean of its divisors is an integer number (3505780).

Almost surely, 212270223 is an apocalyptic number.

12270223 is a deficient number, since it is larger than the sum of its proper divisors (1752897).

12270223 is an equidigital number, since it uses as much as digits as its factorization.

12270223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752896.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 12270223 is about 3502.8878086516. The cubic root of 12270223 is about 230.6485977230.

Adding to 12270223 its reverse (32207221), we get a palindrome (44477444).

The spelling of 12270223 in words is "twelve million, two hundred seventy thousand, two hundred twenty-three".

Divisors: 1 7 1752889 12270223