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8309013 = 323311887
BaseRepresentation
bin11111101100100100010101
3120122010211020
4133230210111
54111342023
6454031353
7130424346
oct37544425
916563736
108309013
114765759
122948559
13194bc9b
1411640cd
15ae1de3
hex7ec915

8309013 has 8 divisors (see below), whose sum is σ = 11127168. Its totient is φ = 5515104.

The previous prime is 8309011. The next prime is 8309033. The reversal of 8309013 is 3109038.

8309013 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8309013 - 21 = 8309011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8309011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5245 + ... + 6642.

It is an arithmetic number, because the mean of its divisors is an integer number (1390896).

Almost surely, 28309013 is an apocalyptic number.

It is an amenable number.

8309013 is a deficient number, since it is larger than the sum of its proper divisors (2818155).

8309013 is a wasteful number, since it uses less digits than its factorization.

8309013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12123.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 8309013 is about 2882.5358627431. The cubic root of 8309013 is about 202.5426461013.

The spelling of 8309013 in words is "eight million, three hundred nine thousand, thirteen".

Divisors: 1 3 233 699 11887 35661 2769671 8309013