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12789230 = 257118013
BaseRepresentation
bin110000110010…
…010111101110
3220001202112012
4300302113232
511233223410
61134041222
7213464246
oct60622756
926052465
1012789230
117245813
124349212
13285a2bc
1419acb26
1511c9605
hexc325ee

12789230 has 16 divisors (see below), whose sum is σ = 23346144. Its totient is φ = 5043360.

The previous prime is 12789229. The next prime is 12789233. The reversal of 12789230 is 3298721.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12789233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8297 + ... + 9716.

It is an arithmetic number, because the mean of its divisors is an integer number (1459134).

Almost surely, 212789230 is an apocalyptic number.

12789230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12789230 is a deficient number, since it is larger than the sum of its proper divisors (10556914).

12789230 is a wasteful number, since it uses less digits than its factorization.

12789230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18091.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 12789230 is about 3576.2032939977. The cubic root of 12789230 is about 233.8557929995.

The spelling of 12789230 in words is "twelve million, seven hundred eighty-nine thousand, two hundred thirty".

Divisors: 1 2 5 10 71 142 355 710 18013 36026 90065 180130 1278923 2557846 6394615 12789230