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82906165 = 516581233
BaseRepresentation
bin1001111000100…
…00110000110101
312210000001212201
410330100300311
5132210444130
612120544501
72024455636
oct474206065
9183001781
1082906165
11428866a1
1223922131
131423a104
14b02188d
157429bca
hex4f10c35

82906165 has 4 divisors (see below), whose sum is σ = 99487404. Its totient is φ = 66324928.

The previous prime is 82906129. The next prime is 82906171. The reversal of 82906165 is 56160928.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66210769 + 16695396 = 8137^2 + 4086^2 .

It is a cyclic number.

It is not a de Polignac number, because 82906165 - 29 = 82905653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8290612 + ... + 8290621.

It is an arithmetic number, because the mean of its divisors is an integer number (24871851).

Almost surely, 282906165 is an apocalyptic number.

It is an amenable number.

82906165 is a deficient number, since it is larger than the sum of its proper divisors (16581239).

82906165 is a wasteful number, since it uses less digits than its factorization.

82906165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16581238.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 82906165 is about 9105.2822581181. The cubic root of 82906165 is about 436.0426216645.

The spelling of 82906165 in words is "eighty-two million, nine hundred six thousand, one hundred sixty-five".

Divisors: 1 5 16581233 82906165