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12705193 = 16776079
BaseRepresentation
bin110000011101…
…110110101001
3212220111020201
4300131312221
511223031233
61132152201
7212664244
oct60356651
925814221
1012705193
117198666
124308661
13282ac87
14198a25b
1511ae77d
hexc1dda9

12705193 has 4 divisors (see below), whose sum is σ = 12781440. Its totient is φ = 12628948.

The previous prime is 12705179. The next prime is 12705197. The reversal of 12705193 is 39150721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12705193 is a prime.

It is a super-2 number, since 2×127051932 = 322843858334498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12705197) 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, 37873 + ... + 38206.

It is an arithmetic number, because the mean of its divisors is an integer number (3195360).

Almost surely, 212705193 is an apocalyptic number.

It is an amenable number.

12705193 is a deficient number, since it is larger than the sum of its proper divisors (76247).

12705193 is an equidigital number, since it uses as much as digits as its factorization.

12705193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76246.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 12705193 is about 3564.4344572456. The cubic root of 12705193 is about 233.3424511176.

The spelling of 12705193 in words is "twelve million, seven hundred five thousand, one hundred ninety-three".

Divisors: 1 167 76079 12705193