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8730085 = 572132741
BaseRepresentation
bin100001010011…
…010111100101
3121102112102111
4201103113211
54213330320
6511041021
7134130100
oct41232745
917375374
108730085
114a23051
122b10171
131a68840
141233737
15b76a5a
hex8535e5

8730085 has 24 divisors (see below), whose sum is σ = 13128696. Its totient is φ = 5523840.

The previous prime is 8730083. The next prime is 8730091. The reversal of 8730085 is 5800378.

8730085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3969 + 8726116 = 63^2 + 2954^2 .

It is not a de Polignac number, because 8730085 - 21 = 8730083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8730083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1815 + ... + 4555.

It is an arithmetic number, because the mean of its divisors is an integer number (547029).

Almost surely, 28730085 is an apocalyptic number.

It is an amenable number.

8730085 is a deficient number, since it is larger than the sum of its proper divisors (4398611).

8730085 is a wasteful number, since it uses less digits than its factorization.

8730085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2773 (or 2766 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 8730085 is about 2954.6717245745. The cubic root of 8730085 is about 205.9078121457.

The spelling of 8730085 in words is "eight million, seven hundred thirty thousand, eighty-five".

Divisors: 1 5 7 13 35 49 65 91 245 455 637 2741 3185 13705 19187 35633 95935 134309 178165 249431 671545 1247155 1746017 8730085