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12000169 = 67179107
BaseRepresentation
bin101101110001…
…101110101001
3211120200010201
4231301232221
511033001134
61105112201
7203666626
oct55615651
924520121
1012000169
1168569a5
124028661
1326420bc
14184534d
1510c0914
hexb71ba9

12000169 has 4 divisors (see below), whose sum is σ = 12179344. Its totient is φ = 11820996.

The previous prime is 12000133. The next prime is 12000239. The reversal of 12000169 is 96100021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96100021 = 400324007.

It is a cyclic number.

It is not a de Polignac number, because 12000169 - 29 = 11999657 is a prime.

It is a super-2 number, since 2×120001692 = 288008112057122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12000269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89487 + ... + 89620.

It is an arithmetic number, because the mean of its divisors is an integer number (3044836).

Almost surely, 212000169 is an apocalyptic number.

It is an amenable number.

12000169 is a deficient number, since it is larger than the sum of its proper divisors (179175).

12000169 is an equidigital number, since it uses as much as digits as its factorization.

12000169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179174.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 12000169 is about 3464.1260081007. The cubic root of 12000169 is about 228.9439232651.

The spelling of 12000169 in words is "twelve million, one hundred sixty-nine", and thus it is an aban number.

Divisors: 1 67 179107 12000169