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795809 = 72109149
BaseRepresentation
bin11000010010010100001
31111102122102
43002102201
5200431214
625020145
76523100
oct3022241
91442572
10795809
114a39a3
12324655
1321b2c1
1416a037
1510abde
hexc24a1

795809 has 12 divisors (see below), whose sum is σ = 940500. Its totient is φ = 671328.

The previous prime is 795803. The next prime is 795827. The reversal of 795809 is 908597.

It can be written as a sum of positive squares in 2 ways, for example, as 305809 + 490000 = 553^2 + 700^2 .

It is not a de Polignac number, because 795809 - 24 = 795793 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (795803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5267 + ... + 5415.

It is an arithmetic number, because the mean of its divisors is an integer number (78375).

2795809 is an apocalyptic number.

It is an amenable number.

795809 is a deficient number, since it is larger than the sum of its proper divisors (144691).

795809 is a wasteful number, since it uses less digits than its factorization.

795809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 795809 is about 892.0812743243. The cubic root of 795809 is about 92.6693852753.

The spelling of 795809 in words is "seven hundred ninety-five thousand, eight hundred nine".

Divisors: 1 7 49 109 149 763 1043 5341 7301 16241 113687 795809