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13275469 = 17537573
BaseRepresentation
bin110010101001…
…000101001101
3220222110112001
4302221011031
511344303334
61152312301
7220560664
oct62510515
926873461
1013275469
117548069
124542691
13299a70c
141a97ddb
151273714
hexca914d

13275469 has 4 divisors (see below), whose sum is σ = 13284796. Its totient is φ = 13266144.

The previous prime is 13275421. The next prime is 13275481. The reversal of 13275469 is 96457231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 96457231 = 137419787.

It can be written as a sum of positive squares in 2 ways, for example, as 7452900 + 5822569 = 2730^2 + 2413^2 .

It is a cyclic number.

It is not a de Polignac number, because 13275469 - 29 = 13274957 is a prime.

It is a super-2 number, since 2×132754692 = 352476154339922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13275569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2034 + ... + 5539.

It is an arithmetic number, because the mean of its divisors is an integer number (3321199).

Almost surely, 213275469 is an apocalyptic number.

It is an amenable number.

13275469 is a deficient number, since it is larger than the sum of its proper divisors (9327).

13275469 is an equidigital number, since it uses as much as digits as its factorization.

13275469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9326.

The product of its digits is 45360, while the sum is 37.

The square root of 13275469 is about 3643.5517012937. The cubic root of 13275469 is about 236.7826941048.

The spelling of 13275469 in words is "thirteen million, two hundred seventy-five thousand, four hundred sixty-nine".

Divisors: 1 1753 7573 13275469