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85807068 = 2237150589
BaseRepresentation
bin1010001110101…
…00111111011100
312222110110011120
411013110333130
5133431311233
612303050540
72061230244
oct507247734
9188413146
1085807068
1144488136
12248a0a50
1314a14619
14b578b24
1577ee4b3
hex51d4fdc

85807068 has 12 divisors (see below), whose sum is σ = 200216520. Its totient is φ = 28602352.

The previous prime is 85807067. The next prime is 85807079. The reversal of 85807068 is 86070858.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×858070683 (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85807061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3575283 + ... + 3575306.

It is an arithmetic number, because the mean of its divisors is an integer number (16684710).

Almost surely, 285807068 is an apocalyptic number.

It is an amenable number.

85807068 is an abundant number, since it is smaller than the sum of its proper divisors (114409452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85807068 is a wasteful number, since it uses less digits than its factorization.

85807068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7150596 (or 7150594 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 85807068 is about 9263.2104585829. The cubic root of 85807068 is about 441.0701704971.

The spelling of 85807068 in words is "eighty-five million, eight hundred seven thousand, sixty-eight".

Divisors: 1 2 3 4 6 12 7150589 14301178 21451767 28602356 42903534 85807068