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13471289 = 131036253
BaseRepresentation
bin110011011000…
…111000111001
3221100102010122
4303120320321
511422040124
61200423025
7222334616
oct63307071
927312118
1013471289
1176711a7
124617a75
132a388a0
141b0950d
1512b175e
hexcd8e39

13471289 has 4 divisors (see below), whose sum is σ = 14507556. Its totient is φ = 12435024.

The previous prime is 13471273. The next prime is 13471291. The reversal of 13471289 is 98217431.

13471289 is digitally balanced in base 3, 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 3485689 + 9985600 = 1867^2 + 3160^2 .

It is a cyclic number.

It is not a de Polignac number, because 13471289 - 24 = 13471273 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13471189) 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, 518114 + ... + 518139.

It is an arithmetic number, because the mean of its divisors is an integer number (3626889).

Almost surely, 213471289 is an apocalyptic number.

It is an amenable number.

13471289 is a deficient number, since it is larger than the sum of its proper divisors (1036267).

13471289 is a wasteful number, since it uses less digits than its factorization.

13471289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036266.

The product of its digits is 12096, while the sum is 35.

The square root of 13471289 is about 3670.3254624079. The cubic root of 13471289 is about 237.9412384649.

The spelling of 13471289 in words is "thirteen million, four hundred seventy-one thousand, two hundred eighty-nine".

Divisors: 1 13 1036253 13471289