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12270230 = 257592971
BaseRepresentation
bin101110110011…
…101010010110
3212002101120222
4232303222112
511120121410
61114554342
7206203160
oct56635226
925071528
1012270230
116a20895
1241389b2
132707cbb
1418b5930
151125955
hexbb3a96

12270230 has 32 divisors (see below), whose sum is σ = 25678080. Its totient is φ = 4134240.

The previous prime is 12270229. The next prime is 12270233. The reversal of 12270230 is 3207221.

It is a junction number, because it is equal to n+sod(n) for n = 12270199 and 12270208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12270233) 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, 2645 + ... + 5615.

It is an arithmetic number, because the mean of its divisors is an integer number (802440).

Almost surely, 212270230 is an apocalyptic number.

12270230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12270230 is an abundant number, since it is smaller than the sum of its proper divisors (13407850).

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

12270230 is a wasteful number, since it uses less digits than its factorization.

12270230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 12270230 is about 3502.8888078270. Note that the first 4 decimals coincide. The cubic root of 12270230 is about 230.6486415836.

Adding to 12270230 its reverse (3207221), we get a palindrome (15477451).

The spelling of 12270230 in words is "twelve million, two hundred seventy thousand, two hundred thirty".

Divisors: 1 2 5 7 10 14 35 59 70 118 295 413 590 826 2065 2971 4130 5942 14855 20797 29710 41594 103985 175289 207970 350578 876445 1227023 1752890 2454046 6135115 12270230