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12985260 = 2235216421
BaseRepresentation
bin110001100010…
…001110101100
3220102201102120
4301202032230
511311012020
61142152540
7215241621
oct61421654
926381376
1012985260
11736a022
124422750
1328c85b2
141a20348
151217740
hexc623ac

12985260 has 24 divisors (see below), whose sum is σ = 36358896. Its totient is φ = 3462720.

The previous prime is 12985223. The next prime is 12985277. The reversal of 12985260 is 6258921.

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 7 ways as a sum of consecutive naturals, for example, 108151 + ... + 108270.

It is an arithmetic number, because the mean of its divisors is an integer number (1514954).

Almost surely, 212985260 is an apocalyptic number.

12985260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12985260 is an abundant number, since it is smaller than the sum of its proper divisors (23373636).

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

12985260 is a wasteful number, since it uses less digits than its factorization.

12985260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216433 (or 216431 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 12985260 is about 3603.5066254969. The cubic root of 12985260 is about 235.0445667701.

The spelling of 12985260 in words is "twelve million, nine hundred eighty-five thousand, two hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 216421 432842 649263 865684 1082105 1298526 2164210 2597052 3246315 4328420 6492630 12985260