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12705353 = 44928297
BaseRepresentation
bin110000011101…
…111001001001
3212220111110122
4300131321021
511223032403
61132153025
7212664563
oct60357111
925814418
1012705353
1171987a1
124308775
13282b07b
14198a333
1511ae838
hexc1de49

12705353 has 4 divisors (see below), whose sum is σ = 12734100. Its totient is φ = 12676608.

The previous prime is 12705349. The next prime is 12705377. The reversal of 12705353 is 35350721.

12705353 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4108729 + 8596624 = 2027^2 + 2932^2 .

It is a cyclic number.

It is not a de Polignac number, because 12705353 - 22 = 12705349 is a prime.

It is a super-2 number, since 2×127053532 = 322851989709218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12705313) 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, 13700 + ... + 14597.

It is an arithmetic number, because the mean of its divisors is an integer number (3183525).

Almost surely, 212705353 is an apocalyptic number.

It is an amenable number.

12705353 is a deficient number, since it is larger than the sum of its proper divisors (28747).

12705353 is an equidigital number, since it uses as much as digits as its factorization.

12705353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28746.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 12705353 is about 3564.4569011281. The cubic root of 12705353 is about 233.3434306288.

The spelling of 12705353 in words is "twelve million, seven hundred five thousand, three hundred fifty-three".

Divisors: 1 449 28297 12705353