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12583213 = 17740189
BaseRepresentation
bin110000000000…
…000100101101
3212200021220221
4300000010231
511210130323
61125411341
7211645516
oct60000455
925607827
1012583213
117114a55
124269b51
1327b75b6
141957a0d
15118855d
hexc0012d

12583213 has 4 divisors (see below), whose sum is σ = 13323420. Its totient is φ = 11843008.

The previous prime is 12583211. The next prime is 12583217. The reversal of 12583213 is 31238521.

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 10673289 + 1909924 = 3267^2 + 1382^2 .

It is a cyclic number.

It is not a de Polignac number, because 12583213 - 21 = 12583211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12583211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370078 + ... + 370111.

It is an arithmetic number, because the mean of its divisors is an integer number (3330855).

Almost surely, 212583213 is an apocalyptic number.

It is an amenable number.

12583213 is a deficient number, since it is larger than the sum of its proper divisors (740207).

12583213 is an equidigital number, since it uses as much as digits as its factorization.

12583213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740206.

The product of its digits is 1440, while the sum is 25.

The square root of 12583213 is about 3547.2824809987. The cubic root of 12583213 is about 232.5932904999.

It can be divided in two parts, 125 and 83213, that added together give a palindrome (83338).

The spelling of 12583213 in words is "twelve million, five hundred eighty-three thousand, two hundred thirteen".

Divisors: 1 17 740189 12583213