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12887343 = 347217191
BaseRepresentation
bin110001001010…
…010100101111
3220020202010000
4301022110233
511244343333
61140115343
7214353300
oct61122457
926222100
1012887343
1173024a7
124395b53
132892b61
1419d67a7
1511e8713
hexc4a52f

12887343 has 60 divisors (see below), whose sum is σ = 23836032. Its totient is φ = 6894720.

The previous prime is 12887341. The next prime is 12887389. The reversal of 12887343 is 34378821.

12887343 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12887343 - 21 = 12887341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12887298 and 12887307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12887341) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 67378 + ... + 67568.

Almost surely, 212887343 is an apocalyptic number.

12887343 is a deficient number, since it is larger than the sum of its proper divisors (10948689).

12887343 is a wasteful number, since it uses less digits than its factorization.

12887343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 218 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 12887343 is about 3589.8945666969. The cubic root of 12887343 is about 234.4522810751.

The spelling of 12887343 in words is "twelve million, eight hundred eighty-seven thousand, three hundred forty-three".

Divisors: 1 3 7 9 17 21 27 49 51 63 81 119 147 153 189 191 357 441 459 567 573 833 1071 1323 1337 1377 1719 2499 3213 3247 3969 4011 5157 7497 9359 9639 9741 12033 15471 22491 22729 28077 29223 36099 67473 68187 84231 87669 108297 159103 204561 252693 263007 477309 613683 758079 1431927 1841049 4295781 12887343