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12989106 = 2331318503
BaseRepresentation
bin110001100011…
…001010110010
3220102220201000
4301203022302
511311122411
61142222430
7215256054
oct61431262
926386630
1012989106
1173719a9
124424a16
1328ca280
141a218d4
151218956
hexc632b2

12989106 has 32 divisors (see below), whose sum is σ = 31086720. Its totient is φ = 3996432.

The previous prime is 12989083. The next prime is 12989111. The reversal of 12989106 is 60198921.

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 15 ways as a sum of consecutive naturals, for example, 8550 + ... + 9953.

It is an arithmetic number, because the mean of its divisors is an integer number (971460).

Almost surely, 212989106 is an apocalyptic number.

12989106 is an abundant number, since it is smaller than the sum of its proper divisors (18097614).

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

12989106 is a wasteful number, since it uses less digits than its factorization.

12989106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18527 (or 18521 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 12989106 is about 3604.0402328498. The cubic root of 12989106 is about 235.0677698011.

It can be divided in two parts, 1298 and 9106, that added together give a square (10404 = 1022).

The spelling of 12989106 in words is "twelve million, nine hundred eighty-nine thousand, one hundred six".

Divisors: 1 2 3 6 9 13 18 26 27 39 54 78 117 234 351 702 18503 37006 55509 111018 166527 240539 333054 481078 499581 721617 999162 1443234 2164851 4329702 6494553 12989106