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12105085 = 54751511
BaseRepresentation
bin101110001011…
…010101111101
3211210000001111
4232023111331
511044330320
61111242021
7204614536
oct56132575
924700044
1012105085
116918803
124079311
13267aa95
14187168d
1510e1a5a
hexb8b57d

12105085 has 8 divisors (see below), whose sum is σ = 14835456. Its totient is φ = 9477840.

The previous prime is 12105083. The next prime is 12105113. The reversal of 12105085 is 58050121.

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

It is not a de Polignac number, because 12105085 - 21 = 12105083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12105083) 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, 25521 + ... + 25990.

It is an arithmetic number, because the mean of its divisors is an integer number (1854432).

Almost surely, 212105085 is an apocalyptic number.

It is an amenable number.

12105085 is a deficient number, since it is larger than the sum of its proper divisors (2730371).

12105085 is an equidigital number, since it uses as much as digits as its factorization.

12105085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51563.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 12105085 is about 3479.2362667689. The cubic root of 12105085 is about 229.6091977218.

The spelling of 12105085 in words is "twelve million, one hundred five thousand, eighty-five".

Divisors: 1 5 47 235 51511 257555 2421017 12105085