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85230015 = 3513437077
BaseRepresentation
bin1010001010010…
…00000110111111
312221101010121020
411011020012333
5133304330030
612242435223
72053305003
oct505100677
9187333536
1085230015
1144123632
1224662b13
1314871a80
14b468703
157738510
hex51481bf

85230015 has 16 divisors (see below), whose sum is σ = 146858208. Its totient is φ = 41959296.

The previous prime is 85229983. The next prime is 85230023. The reversal of 85230015 is 51003258.

It is not a de Polignac number, because 85230015 - 25 = 85229983 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 218344 + ... + 218733.

It is an arithmetic number, because the mean of its divisors is an integer number (9178638).

Almost surely, 285230015 is an apocalyptic number.

85230015 is a deficient number, since it is larger than the sum of its proper divisors (61628193).

85230015 is a wasteful number, since it uses less digits than its factorization.

85230015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437098.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 85230015 is about 9232.0103444483. The cubic root of 85230015 is about 440.0792126670.

The spelling of 85230015 in words is "eighty-five million, two hundred thirty thousand, fifteen".

Divisors: 1 3 5 13 15 39 65 195 437077 1311231 2185385 5682001 6556155 17046003 28410005 85230015