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13006860 = 2235216781
BaseRepresentation
bin110001100111…
…100000001100
3220110211001120
4301213200030
511312204420
61142440540
7215361606
oct61474014
926424046
1013006860
117384279
124433150
132905389
141a28176
15121dd40
hexc6780c

13006860 has 24 divisors (see below), whose sum is σ = 36419376. Its totient is φ = 3468480.

The previous prime is 13006843. The next prime is 13006867. The reversal of 13006860 is 6860031.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 13006860.

It is not an unprimeable number, because it can be changed into a prime (13006867) 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, 108331 + ... + 108450.

It is an arithmetic number, because the mean of its divisors is an integer number (1517474).

Almost surely, 213006860 is an apocalyptic number.

13006860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13006860 is an abundant number, since it is smaller than the sum of its proper divisors (23412516).

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

13006860 is a wasteful number, since it uses less digits than its factorization.

13006860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216793 (or 216791 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 13006860 is about 3606.5024608338. The cubic root of 13006860 is about 235.1748208735.

Adding to 13006860 its reverse (6860031), we get a palindrome (19866891).

The spelling of 13006860 in words is "thirteen million, six thousand, eight hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 216781 433562 650343 867124 1083905 1300686 2167810 2601372 3251715 4335620 6503430 13006860