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12944 = 24809
BaseRepresentation
bin11001010010000
3122202102
43022100
5403234
6135532
752511
oct31220
918672
1012944
1197a8
1275a8
135b79
144a08
153c7e
hex3290

12944 has 10 divisors (see below), whose sum is σ = 25110. Its totient is φ = 6464.

The previous prime is 12941. The next prime is 12953. The reversal of 12944 is 44921.

It can be written as a sum of positive squares in only one way, i.e., 12544 + 400 = 112^2 + 20^2 .

It is not an unprimeable number, because it can be changed into a prime (12941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389 + ... + 420.

It is an arithmetic number, because the mean of its divisors is an integer number (2511).

212944 is an apocalyptic number.

It is an amenable number.

12944 is a deficient number, since it is larger than the sum of its proper divisors (12166).

12944 is an equidigital number, since it uses as much as digits as its factorization.

12944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817 (or 811 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 12944 is about 113.7717012266. The cubic root of 12944 is about 23.4795355265.

The spelling of 12944 in words is "twelve thousand, nine hundred forty-four".

Divisors: 1 2 4 8 16 809 1618 3236 6472 12944