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830109 = 3725647
BaseRepresentation
bin11001010101010011101
31120011200210
43022222131
5203030414
625443033
710025100
oct3125235
91504623
10830109
11517745
12340479
13230ab7
14178737
15115e59
hexcaa9d

830109 has 12 divisors (see below), whose sum is σ = 1287744. Its totient is φ = 474264.

The previous prime is 830099. The next prime is 830111. The reversal of 830109 is 901038.

It is not a de Polignac number, because 830109 - 217 = 699037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (830309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2677 + ... + 2970.

It is an arithmetic number, because the mean of its divisors is an integer number (107312).

2830109 is an apocalyptic number.

It is an amenable number.

830109 is a deficient number, since it is larger than the sum of its proper divisors (457635).

830109 is a wasteful number, since it uses less digits than its factorization.

830109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5664 (or 5657 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 830109 is about 911.1031774722. The cubic root of 830109 is about 93.9820774643.

It can be divided in two parts, 830 and 109, that added together give a palindrome (939).

The spelling of 830109 in words is "eight hundred thirty thousand, one hundred nine".

Divisors: 1 3 7 21 49 147 5647 16941 39529 118587 276703 830109