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12995443 = 24153923
BaseRepresentation
bin110001100100…
…101101110011
3220110020101201
4301210231303
511311323233
61142312031
7215313406
oct61445563
926406351
1012995443
11737673a
124428617
132900116
141a23d3d
15121a77d
hexc64b73

12995443 has 4 divisors (see below), whose sum is σ = 13049608. Its totient is φ = 12941280.

The previous prime is 12995431. The next prime is 12995459. The reversal of 12995443 is 34459921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34459921 = 71485351.

It is a cyclic number.

It is not a de Polignac number, because 12995443 - 221 = 10898291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12995413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26721 + ... + 27202.

It is an arithmetic number, because the mean of its divisors is an integer number (3262402).

Almost surely, 212995443 is an apocalyptic number.

12995443 is a deficient number, since it is larger than the sum of its proper divisors (54165).

12995443 is an equidigital number, since it uses as much as digits as its factorization.

12995443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54164.

The product of its digits is 38880, while the sum is 37.

The square root of 12995443 is about 3604.9192778757. The cubic root of 12995443 is about 235.1059911197.

The spelling of 12995443 in words is "twelve million, nine hundred ninety-five thousand, four hundred forty-three".

Divisors: 1 241 53923 12995443