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12305230 = 257237643
BaseRepresentation
bin101110111100…
…001101001110
3212011011121021
4232330031032
511122231410
61115424354
7206410210
oct56741516
925134537
1012305230
116a45113
1241550ba
13271ac02
1418c45b0
151130eda
hexbbc34e

12305230 has 32 divisors (see below), whose sum is σ = 26417664. Its totient is φ = 4034976.

The previous prime is 12305221. The next prime is 12305231. The reversal of 12305230 is 3250321.

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 (12305231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2212 + ... + 5431.

It is an arithmetic number, because the mean of its divisors is an integer number (825552).

Almost surely, 212305230 is an apocalyptic number.

12305230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12305230 is an abundant number, since it is smaller than the sum of its proper divisors (14112434).

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

12305230 is a wasteful number, since it uses less digits than its factorization.

12305230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7680.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 12305230 is about 3507.8811268343. The cubic root of 12305230 is about 230.8677366069.

Adding to 12305230 its reverse (3250321), we get a palindrome (15555551).

The spelling of 12305230 in words is "twelve million, three hundred five thousand, two hundred thirty".

Divisors: 1 2 5 7 10 14 23 35 46 70 115 161 230 322 805 1610 7643 15286 38215 53501 76430 107002 175789 267505 351578 535010 878945 1230523 1757890 2461046 6152615 12305230