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12132165 = 351942569
BaseRepresentation
bin101110010001…
…111101000101
3211211101012110
4232101331011
511101212130
61112011233
7205056513
oct56217505
924741173
1012132165
116937091
124090b19
13268a1c6
14187b4b3
1510e9ab0
hexb91f45

12132165 has 16 divisors (see below), whose sum is σ = 20433600. Its totient is φ = 6129792.

The previous prime is 12132151. The next prime is 12132217. The reversal of 12132165 is 56123121.

It is not a de Polignac number, because 12132165 - 28 = 12131909 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 21000 + ... + 21569.

It is an arithmetic number, because the mean of its divisors is an integer number (1277100).

Almost surely, 212132165 is an apocalyptic number.

12132165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12132165 is a deficient number, since it is larger than the sum of its proper divisors (8301435).

12132165 is a wasteful number, since it uses less digits than its factorization.

12132165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42596.

The product of its digits is 360, while the sum is 21.

The square root of 12132165 is about 3483.1257513906. The cubic root of 12132165 is about 229.7802879772.

Adding to 12132165 its reverse (56123121), we get a palindrome (68255286).

The spelling of 12132165 in words is "twelve million, one hundred thirty-two thousand, one hundred sixty-five".

Divisors: 1 3 5 15 19 57 95 285 42569 127707 212845 638535 808811 2426433 4044055 12132165