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13212727 = 113138747
BaseRepresentation
bin110010011001…
…110000110111
3220212021110021
4302121300313
511340301402
61151110011
7220210033
oct62316067
926767407
1013212727
117504a10
124512307
132977ca8
141a7d1c3
15125ed37
hexc99c37

13212727 has 8 divisors (see below), whose sum is σ = 14879232. Its totient is φ = 11623800.

The previous prime is 13212713. The next prime is 13212743. The reversal of 13212727 is 72721231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13212727 - 27 = 13212599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212707) 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 7 ways as a sum of consecutive naturals, for example, 19033 + ... + 19714.

It is an arithmetic number, because the mean of its divisors is an integer number (1859904).

Almost surely, 213212727 is an apocalyptic number.

13212727 is a deficient number, since it is larger than the sum of its proper divisors (1666505).

13212727 is a wasteful number, since it uses less digits than its factorization.

13212727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38789.

The product of its digits is 1176, while the sum is 25.

The square root of 13212727 is about 3634.9314986668. The cubic root of 13212727 is about 236.4090805440.

Adding to 13212727 its reverse (72721231), we get a palindrome (85933958).

The spelling of 13212727 in words is "thirteen million, two hundred twelve thousand, seven hundred twenty-seven".

Divisors: 1 11 31 341 38747 426217 1201157 13212727