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85376128 = 27739137
BaseRepresentation
bin1010001011010…
…11110010000000
312221122120000211
411011223302000
5133324014003
612245523504
72054453665
oct505536200
9187576024
1085376128
1144213392
1224713594
13148c3426
14b4a5a6c
15776696d
hex516bc80

85376128 has 32 divisors (see below), whose sum is σ = 172434060. Its totient is φ = 42098688.

The previous prime is 85376119. The next prime is 85376143. The reversal of 85376128 is 82167358.

It can be written as a sum of positive squares in 2 ways, for example, as 77580864 + 7795264 = 8808^2 + 2792^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4776 + ... + 13912.

Almost surely, 285376128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85376128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86217030).

85376128 is an abundant number, since it is smaller than the sum of its proper divisors (87057932).

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

85376128 is an equidigital number, since it uses as much as digits as its factorization.

85376128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9224 (or 9212 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 85376128 is about 9239.9203459770. The cubic root of 85376128 is about 440.3305505094.

The spelling of 85376128 in words is "eighty-five million, three hundred seventy-six thousand, one hundred twenty-eight".

Divisors: 1 2 4 8 16 32 64 73 128 146 292 584 1168 2336 4672 9137 9344 18274 36548 73096 146192 292384 584768 667001 1169536 1334002 2668004 5336008 10672016 21344032 42688064 85376128