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12993210 = 23555347
BaseRepresentation
bin110001100100…
…001010111010
3220110010100000
4301210022322
511311240320
61142253430
7215304036
oct61441272
926403300
1012993210
117374a9a
124427276
1328cc0b9
141a231c6
151219c90
hexc642ba

12993210 has 48 divisors (see below), whose sum is σ = 35040096. Its totient is φ = 3464208.

The previous prime is 12993193. The next prime is 12993221. The reversal of 12993210 is 1239921.

It is a super-2 number, since 2×129932102 = 337647012208200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 244 + ... + 5103.

It is an arithmetic number, because the mean of its divisors is an integer number (730002).

Almost surely, 212993210 is an apocalyptic number.

12993210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12993210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17520048).

12993210 is an abundant number, since it is smaller than the sum of its proper divisors (22046886).

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

12993210 is an equidigital number, since it uses as much as digits as its factorization.

12993210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5369 (or 5357 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 12993210 is about 3604.6095488971. The cubic root of 12993210 is about 235.0925243029.

It can be divided in two parts, 12993 and 210, that added together give a triangular number (13203 = T162).

The spelling of 12993210 in words is "twelve million, nine hundred ninety-three thousand, two hundred ten".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 162 243 270 405 486 810 1215 2430 5347 10694 16041 26735 32082 48123 53470 80205 96246 144369 160410 240615 288738 433107 481230 721845 866214 1299321 1443690 2165535 2598642 4331070 6496605 12993210