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12230489 = 29421741
BaseRepresentation
bin101110101001…
…111101011001
3212000101002002
4232221331121
511112333424
61114050345
7205646255
oct56517531
925011062
1012230489
1169a3a47
1241199b5
1326c2b9b
1418a5265
151118cae
hexba9f59

12230489 has 4 divisors (see below), whose sum is σ = 12652260. Its totient is φ = 11808720.

The previous prime is 12230467. The next prime is 12230513. The reversal of 12230489 is 98403221.

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 7425625 + 4804864 = 2725^2 + 2192^2 .

It is a cyclic number.

It is not a de Polignac number, because 12230489 - 28 = 12230233 is a prime.

It is a super-2 number, since 2×122304892 = 299169722358242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 421741 = 12230489 / (1 + 2 + 2 + 3 + 0 + 4 + 8 + 9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12230419) 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, 210842 + ... + 210899.

It is an arithmetic number, because the mean of its divisors is an integer number (3163065).

Almost surely, 212230489 is an apocalyptic number.

It is an amenable number.

12230489 is a deficient number, since it is larger than the sum of its proper divisors (421771).

12230489 is an equidigital number, since it uses as much as digits as its factorization.

12230489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421770.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 12230489 is about 3497.2116035493. The cubic root of 12230489 is about 230.3993628716.

The spelling of 12230489 in words is "twelve million, two hundred thirty thousand, four hundred eighty-nine".

Divisors: 1 29 421741 12230489