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85307853 = 3171988037
BaseRepresentation
bin1010001010110…
…11000111001101
312221112002101010
411011123013031
5133314322403
612244235433
72054050641
oct505330715
9187462333
1085307853
1144177064
122469bb79
131489b327
14b488c21
157751603
hex515b1cd

85307853 has 16 divisors (see below), whose sum is σ = 126774720. Its totient is φ = 50708736.

The previous prime is 85307801. The next prime is 85307863. The reversal of 85307853 is 35870358.

It is not a de Polignac number, because 85307853 - 213 = 85299661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85307863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43050 + ... + 44987.

It is an arithmetic number, because the mean of its divisors is an integer number (7923420).

Almost surely, 285307853 is an apocalyptic number.

It is an amenable number.

85307853 is a deficient number, since it is larger than the sum of its proper divisors (41466867).

85307853 is a wasteful number, since it uses less digits than its factorization.

85307853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88076.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 85307853 is about 9236.2250405672. The cubic root of 85307853 is about 440.2131422576.

The spelling of 85307853 in words is "eighty-five million, three hundred seven thousand, eight hundred fifty-three".

Divisors: 1 3 17 19 51 57 323 969 88037 264111 1496629 1672703 4489887 5018109 28435951 85307853