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12813260 = 225640663
BaseRepresentation
bin110000111000…
…001111001100
3220002222111012
4300320033030
511240011020
61134344352
7213624305
oct60701714
926088435
1012813260
117261879
12435b0b8
132868215
1419b77ac
1511d17c5
hexc383cc

12813260 has 12 divisors (see below), whose sum is σ = 26907888. Its totient is φ = 5125296.

The previous prime is 12813253. The next prime is 12813263. The reversal of 12813260 is 6231821.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (12813263) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 320312 + ... + 320351.

It is an arithmetic number, because the mean of its divisors is an integer number (2242324).

Almost surely, 212813260 is an apocalyptic number.

12813260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12813260 is an abundant number, since it is smaller than the sum of its proper divisors (14094628).

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

12813260 is a wasteful number, since it uses less digits than its factorization.

12813260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640672 (or 640670 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 12813260 is about 3579.5614256498. The cubic root of 12813260 is about 234.0021671701.

The spelling of 12813260 in words is "twelve million, eight hundred thirteen thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 640663 1281326 2562652 3203315 6406630 12813260