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12230443 = 60720149
BaseRepresentation
bin101110101001…
…111100101011
3212000101000101
4232221330223
511112333233
61114050231
7205646161
oct56517453
925011011
1012230443
1169a3a05
124119977
1326c2b64
1418a5231
151118c7d
hexba9f2b

12230443 has 4 divisors (see below), whose sum is σ = 12251200. Its totient is φ = 12209688.

The previous prime is 12230441. The next prime is 12230459. The reversal of 12230443 is 34403221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34403221 = 73471277.

It is a cyclic number.

It is not a de Polignac number, because 12230443 - 21 = 12230441 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 12230443.

It is not an unprimeable number, because it can be changed into a prime (12230441) 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, 9468 + ... + 10681.

It is an arithmetic number, because the mean of its divisors is an integer number (3062800).

Almost surely, 212230443 is an apocalyptic number.

12230443 is a deficient number, since it is larger than the sum of its proper divisors (20757).

12230443 is an equidigital number, since it uses as much as digits as its factorization.

12230443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20756.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 12230443 is about 3497.2050268750. The cubic root of 12230443 is about 230.3990740201.

Adding to 12230443 its reverse (34403221), we get a palindrome (46633664).

The spelling of 12230443 in words is "twelve million, two hundred thirty thousand, four hundred forty-three".

Divisors: 1 607 20149 12230443