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12439230 = 235414641
BaseRepresentation
bin101111011100…
…111010111110
3212101222102020
4233130322332
511141023410
61122341010
7210505656
oct57347276
925358366
1012439230
117026861
1241ba766
132766bbb
14191b366
15115aa70
hexbdcebe

12439230 has 16 divisors (see below), whose sum is σ = 29854224. Its totient is φ = 3317120.

The previous prime is 12439211. The next prime is 12439237. The reversal of 12439230 is 3293421.

It is a self number, because there is not a number n which added to its sum of digits gives 12439230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12439237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207291 + ... + 207350.

It is an arithmetic number, because the mean of its divisors is an integer number (1865889).

Almost surely, 212439230 is an apocalyptic number.

12439230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12439230 is an abundant number, since it is smaller than the sum of its proper divisors (17414994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12439230 is a wasteful number, since it uses less digits than its factorization.

12439230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414651.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 12439230 is about 3526.9292592849. The cubic root of 12439230 is about 231.7027380876.

The spelling of 12439230 in words is "twelve million, four hundred thirty-nine thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 414641 829282 1243923 2073205 2487846 4146410 6219615 12439230