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85308117 = 3131217069
BaseRepresentation
bin1010001010110…
…11001011010101
312221112002201220
411011123023111
5133314324432
612244240553
72054051466
oct505331325
9187462656
1085308117
1144177284
12246a0159
131489b49b
14b488d6d
15775172c
hex515b2d5

85308117 has 8 divisors (see below), whose sum is σ = 114612960. Its totient is φ = 56437680.

The previous prime is 85308103. The next prime is 85308137. The reversal of 85308117 is 71180358.

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

It is not a de Polignac number, because 85308117 - 24 = 85308101 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85308137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108142 + ... + 108927.

It is an arithmetic number, because the mean of its divisors is an integer number (14326620).

Almost surely, 285308117 is an apocalyptic number.

It is an amenable number.

85308117 is a deficient number, since it is larger than the sum of its proper divisors (29304843).

85308117 is a wasteful number, since it uses less digits than its factorization.

85308117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217203.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 85308117 is about 9236.2393321091. The cubic root of 85308117 is about 440.2135963625.

The spelling of 85308117 in words is "eighty-five million, three hundred eight thousand, one hundred seventeen".

Divisors: 1 3 131 393 217069 651207 28436039 85308117