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8112005 = 511831777
BaseRepresentation
bin11110111100011110000101
3120021010120122
4132330132011
54034041010
6445511325
7125644106
oct36743605
916233518
108112005
114640740
122872545
1318b0405
1411123ad
15aa3855
hex7bc785

8112005 has 16 divisors (see below), whose sum is σ = 10753344. Its totient is φ = 5825280.

The previous prime is 8112001. The next prime is 8112011. The reversal of 8112005 is 5002118.

8112005 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8112005 - 22 = 8112001 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8112001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3677 + ... + 5453.

It is an arithmetic number, because the mean of its divisors is an integer number (672084).

Almost surely, 28112005 is an apocalyptic number.

It is an amenable number.

8112005 is a deficient number, since it is larger than the sum of its proper divisors (2641339).

8112005 is a wasteful number, since it uses less digits than its factorization.

8112005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 8112005 is about 2848.1581767872. The cubic root of 8112005 is about 200.9290526236.

The spelling of 8112005 in words is "eight million, one hundred twelve thousand, five".

Divisors: 1 5 11 55 83 415 913 1777 4565 8885 19547 97735 147491 737455 1622401 8112005