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12983423 = 61212843
BaseRepresentation
bin110001100001…
…110001111111
3220102121220112
4301201301333
511310432143
61142140235
7215233355
oct61416177
926377815
1012983423
117368702
12442167b
1328c77cb
141a1d7d5
151216e18
hexc61c7f

12983423 has 4 divisors (see below), whose sum is σ = 13196328. Its totient is φ = 12770520.

The previous prime is 12983417. The next prime is 12983447. The reversal of 12983423 is 32438921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12983423 - 28 = 12983167 is a prime.

It is a Duffinian number.

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 12983423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12983483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106361 + ... + 106482.

It is an arithmetic number, because the mean of its divisors is an integer number (3299082).

Almost surely, 212983423 is an apocalyptic number.

12983423 is a deficient number, since it is larger than the sum of its proper divisors (212905).

12983423 is an equidigital number, since it uses as much as digits as its factorization.

12983423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212904.

The product of its digits is 10368, while the sum is 32.

The square root of 12983423 is about 3603.2517258721. The cubic root of 12983423 is about 235.0334824784.

The spelling of 12983423 in words is "twelve million, nine hundred eighty-three thousand, four hundred twenty-three".

Divisors: 1 61 212843 12983423