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13132217 = 789107197
BaseRepresentation
bin110010000110…
…000110111001
3220201012000102
4302012012321
511330212332
61145245145
7216423230
oct62060671
926635012
1013132217
11745a47a
1244937b5
13294a457
141a5bb17
151246062
hexc861b9

13132217 has 16 divisors (see below), whose sum is σ = 15396480. Its totient is φ = 10969728.

The previous prime is 13132193. The next prime is 13132219. The reversal of 13132217 is 71223131.

It is not a de Polignac number, because 13132217 - 26 = 13132153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13132219) 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 15 ways as a sum of consecutive naturals, for example, 66563 + ... + 66759.

It is an arithmetic number, because the mean of its divisors is an integer number (962280).

Almost surely, 213132217 is an apocalyptic number.

It is an amenable number.

13132217 is a deficient number, since it is larger than the sum of its proper divisors (2264263).

13132217 is a wasteful number, since it uses less digits than its factorization.

13132217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400.

The product of its digits is 252, while the sum is 20.

The square root of 13132217 is about 3623.8400902910. The cubic root of 13132217 is about 235.9279261381.

Adding to 13132217 its reverse (71223131), we get a palindrome (84355348).

The spelling of 13132217 in words is "thirteen million, one hundred thirty-two thousand, two hundred seventeen".

Divisors: 1 7 89 107 197 623 749 1379 9523 17533 21079 66661 122731 147553 1876031 13132217