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85648423 = 727872221
BaseRepresentation
bin1010001101011…
…10010000100111
312222011101112211
411012232100213
5133411222143
612255424251
72056666600
oct506562047
9188141484
1085648423
1144389a23
1224825087
131498a353
14b536da7
1577bc49d
hex51ae427

85648423 has 12 divisors (see below), whose sum is σ = 99803352. Its totient is φ = 73286640.

The previous prime is 85648417. The next prime is 85648469. The reversal of 85648423 is 32484658.

It is not a de Polignac number, because 85648423 - 25 = 85648391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85645423) 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 11 ways as a sum of consecutive naturals, for example, 37453 + ... + 39673.

It is an arithmetic number, because the mean of its divisors is an integer number (8316946).

Almost surely, 285648423 is an apocalyptic number.

85648423 is a deficient number, since it is larger than the sum of its proper divisors (14154929).

85648423 is a wasteful number, since it uses less digits than its factorization.

85648423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3022 (or 3015 counting only the distinct ones).

The product of its digits is 184320, while the sum is 40.

The square root of 85648423 is about 9254.6433210578. The cubic root of 85648423 is about 440.7981775759.

The spelling of 85648423 in words is "eighty-five million, six hundred forty-eight thousand, four hundred twenty-three".

Divisors: 1 7 49 787 2221 5509 15547 38563 108829 1747927 12235489 85648423