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12858730 = 2547109251
BaseRepresentation
bin110001000011…
…010101101010
3220012021212021
4301003111222
511242434410
61135335054
7214204003
oct61032552
926167767
1012858730
117292a55
12438148a
132882b21
1419ca1aa
1511deeda
hexc4356a

12858730 has 32 divisors (see below), whose sum is σ = 23950080. Its totient is φ = 4968000.

The previous prime is 12858719. The next prime is 12858737. The reversal of 12858730 is 3785821.

It is not an unprimeable number, because it can be changed into a prime (12858737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51105 + ... + 51355.

It is an arithmetic number, because the mean of its divisors is an integer number (748440).

Almost surely, 212858730 is an apocalyptic number.

12858730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12858730 is a deficient number, since it is larger than the sum of its proper divisors (11091350).

12858730 is a wasteful number, since it uses less digits than its factorization.

12858730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 12858730 is about 3585.9071376710. The cubic root of 12858730 is about 234.2786390246.

The spelling of 12858730 in words is "twelve million, eight hundred fifty-eight thousand, seven hundred thirty".

Divisors: 1 2 5 10 47 94 109 218 235 251 470 502 545 1090 1255 2510 5123 10246 11797 23594 25615 27359 51230 54718 58985 117970 136795 273590 1285873 2571746 6429365 12858730