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12163071 = 319121227
BaseRepresentation
bin101110011001…
…011111111111
3211212221121010
4232121133333
511103204241
61112410303
7205245564
oct56313777
924787533
1012163071
116958328
1240a6993
13269b2ab
14188886b
151103d16
hexb997ff

12163071 has 8 divisors (see below), whose sum is σ = 16303104. Its totient is φ = 8065880.

The previous prime is 12163031. The next prime is 12163087. The reversal of 12163071 is 17036121.

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 12163071 - 29 = 12162559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12163001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10041 + ... + 11186.

It is an arithmetic number, because the mean of its divisors is an integer number (2037888).

Almost surely, 212163071 is an apocalyptic number.

12163071 is a deficient number, since it is larger than the sum of its proper divisors (4140033).

12163071 is a wasteful number, since it uses less digits than its factorization.

12163071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21421.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 12163071 is about 3487.5594618587. The cubic root of 12163071 is about 229.9752399307.

Adding to 12163071 its reverse (17036121), we get a palindrome (29199192).

The spelling of 12163071 in words is "twelve million, one hundred sixty-three thousand, seventy-one".

Divisors: 1 3 191 573 21227 63681 4054357 12163071