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12230613 = 321358957
BaseRepresentation
bin101110101001…
…111111010101
3212000101020200
4232221333111
511112334423
61114051113
7205646523
oct56517725
925011220
1012230613
1169a404a
124119a99
1326c2c65
1418a5313
151118d43
hexba9fd5

12230613 has 6 divisors (see below), whose sum is σ = 17666454. Its totient is φ = 8153736.

The previous prime is 12230611. The next prime is 12230629. The reversal of 12230613 is 31603221.

12230613 is a `hidden beast` number, since 1 + 22 + 30 + 613 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9108324 + 3122289 = 3018^2 + 1767^2 .

It is not a de Polignac number, because 12230613 - 21 = 12230611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12230611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 679470 + ... + 679487.

It is an arithmetic number, because the mean of its divisors is an integer number (2944409).

Almost surely, 212230613 is an apocalyptic number.

It is an amenable number.

12230613 is a deficient number, since it is larger than the sum of its proper divisors (5435841).

12230613 is a wasteful number, since it uses less digits than its factorization.

12230613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358963 (or 1358960 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 12230613 is about 3497.2293319141. The cubic root of 12230613 is about 230.4001415111.

Adding to 12230613 its reverse (31603221), we get a palindrome (43833834).

The spelling of 12230613 in words is "twelve million, two hundred thirty thousand, six hundred thirteen".

Divisors: 1 3 9 1358957 4076871 12230613