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13169128 = 2371912377
BaseRepresentation
bin110010001111…
…000111101000
3220210001122111
4302033013220
511332403003
61150132104
7216635650
oct62170750
926701574
1013169128
117485185
1244b1034
1329611ab
141a6b360
151251e6d
hexc8f1e8

13169128 has 32 divisors (see below), whose sum is σ = 29707200. Its totient is φ = 5346432.

The previous prime is 13169099. The next prime is 13169129. The reversal of 13169128 is 82196131.

13169128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 13169128.

It is not an unprimeable number, because it can be changed into a prime (13169129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5125 + ... + 7252.

It is an arithmetic number, because the mean of its divisors is an integer number (928350).

Almost surely, 213169128 is an apocalyptic number.

It is an amenable number.

13169128 is an abundant number, since it is smaller than the sum of its proper divisors (16538072).

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

13169128 is a wasteful number, since it uses less digits than its factorization.

13169128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12409 (or 12405 counting only the distinct ones).

The product of its digits is 2592, while the sum is 31.

The square root of 13169128 is about 3628.9293186834. The cubic root of 13169128 is about 236.1487619015.

The spelling of 13169128 in words is "thirteen million, one hundred sixty-nine thousand, one hundred twenty-eight".

Divisors: 1 2 4 7 8 14 19 28 38 56 76 133 152 266 532 1064 12377 24754 49508 86639 99016 173278 235163 346556 470326 693112 940652 1646141 1881304 3292282 6584564 13169128