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12000165 = 35800011
BaseRepresentation
bin101101110001…
…101110100101
3211120200010120
4231301232211
511033001130
61105112153
7203666622
oct55615645
924520116
1012000165
1168569a1
124028659
1326420b8
141845349
1510c0910
hexb71ba5

12000165 has 8 divisors (see below), whose sum is σ = 19200288. Its totient is φ = 6400080.

The previous prime is 12000133. The next prime is 12000239. The reversal of 12000165 is 56100021.

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

It is not a de Polignac number, because 12000165 - 25 = 12000133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 800011 = 12000165 / (1 + 2 + 0 + 0 + 0 + 1 + 6 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399991 + ... + 400020.

It is an arithmetic number, because the mean of its divisors is an integer number (2400036).

Almost surely, 212000165 is an apocalyptic number.

12000165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12000165 is a deficient number, since it is larger than the sum of its proper divisors (7200123).

12000165 is an equidigital number, since it uses as much as digits as its factorization.

12000165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800019.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 12000165 is about 3464.1254307545. The cubic root of 12000165 is about 228.9438978272.

Adding to 12000165 its reverse (56100021), we get a palindrome (68100186).

It can be divided in two parts, 1200016 and 5, that added together give a palindrome (1200021).

The spelling of 12000165 in words is "twelve million, one hundred sixty-five", and thus it is an aban number.

Divisors: 1 3 5 15 800011 2400033 4000055 12000165