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85823811 = 329535979
BaseRepresentation
bin1010001110110…
…01000101000011
312222111022010200
411013121011003
5133432330221
612303300243
72061330123
oct507310503
9188438120
1085823811
1144499777
12248aa683
1314a1c128
14b580c83
157804426
hex51d9143

85823811 has 6 divisors (see below), whose sum is σ = 123967740. Its totient is φ = 57215868.

The previous prime is 85823791. The next prime is 85823813. The reversal of 85823811 is 11832858.

It is not a de Polignac number, because 85823811 - 26 = 85823747 is a prime.

It is a zygodrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (85823813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4767981 + ... + 4767998.

It is an arithmetic number, because the mean of its divisors is an integer number (20661290).

Almost surely, 285823811 is an apocalyptic number.

85823811 is a deficient number, since it is larger than the sum of its proper divisors (38143929).

85823811 is a wasteful number, since it uses less digits than its factorization.

85823811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9535985 (or 9535982 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 85823811 is about 9264.1141508511. The cubic root of 85823811 is about 441.0988563920.

The spelling of 85823811 in words is "eighty-five million, eight hundred twenty-three thousand, eight hundred eleven".

Divisors: 1 3 9 9535979 28607937 85823811