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12730230 = 233547149
BaseRepresentation
bin110000100011…
…111101110110
3212221202121000
4300203331312
511224331410
61132504130
7213130242
oct60437566
925852530
1012730230
117205457
12431b046
1328394a6
141995422
1511b6dc0
hexc23f76

12730230 has 32 divisors (see below), whose sum is σ = 33948000. Its totient is φ = 3394656.

The previous prime is 12730169. The next prime is 12730283. The reversal of 12730230 is 3203721.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23305 + ... + 23844.

It is an arithmetic number, because the mean of its divisors is an integer number (1060875).

Almost surely, 212730230 is an apocalyptic number.

12730230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12730230 is an abundant number, since it is smaller than the sum of its proper divisors (21217770).

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

12730230 is a wasteful number, since it uses less digits than its factorization.

12730230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47165 (or 47159 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 12730230 is about 3567.9447865683. The cubic root of 12730230 is about 233.4956263214.

Adding to 12730230 its reverse (3203721), we get a palindrome (15933951).

The spelling of 12730230 in words is "twelve million, seven hundred thirty thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 90 135 270 47149 94298 141447 235745 282894 424341 471490 707235 848682 1273023 1414470 2121705 2546046 4243410 6365115 12730230