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12047995 = 519314091
BaseRepresentation
bin101101111101…
…011001111011
3211200002202001
4231331121323
511041013440
61110121431
7204256231
oct55753173
924602661
1012047995
116889923
124050277
13265aabb
141858951
1510ceb9a
hexb7d67b

12047995 has 16 divisors (see below), whose sum is σ = 15713280. Its totient is φ = 8834400.

The previous prime is 12047989. The next prime is 12048073. The reversal of 12047995 is 59974021.

It is not a de Polignac number, because 12047995 - 211 = 12045947 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 900 + ... + 4990.

It is an arithmetic number, because the mean of its divisors is an integer number (982080).

Almost surely, 212047995 is an apocalyptic number.

12047995 is a deficient number, since it is larger than the sum of its proper divisors (3665285).

12047995 is a wasteful number, since it uses less digits than its factorization.

12047995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4146.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 12047995 is about 3471.0221837378. The cubic root of 12047995 is about 229.2476678215.

The spelling of 12047995 in words is "twelve million, forty-seven thousand, nine hundred ninety-five".

Divisors: 1 5 19 31 95 155 589 2945 4091 20455 77729 126821 388645 634105 2409599 12047995