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85241020 = 2254262051
BaseRepresentation
bin1010001010010…
…10110010111100
312221101200200211
411011022302330
5133310203040
612243002204
72053352044
oct505126274
9187350624
1085241020
1144130927
1224669364
1314876a97
14b46c724
15773b8ea
hex514acbc

85241020 has 12 divisors (see below), whose sum is σ = 179006184. Its totient is φ = 34096400.

The previous prime is 85240999. The next prime is 85241021. The reversal of 85241020 is 2014258.

85241020 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

85241020 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 85240982 and 85241000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85241021) 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 3 ways as a sum of consecutive naturals, for example, 2131006 + ... + 2131045.

It is an arithmetic number, because the mean of its divisors is an integer number (14917182).

Almost surely, 285241020 is an apocalyptic number.

It is an amenable number.

85241020 is an abundant number, since it is smaller than the sum of its proper divisors (93765164).

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

85241020 is a wasteful number, since it uses less digits than its factorization.

85241020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4262060 (or 4262058 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 85241020 is about 9232.6063492386. The cubic root of 85241020 is about 440.0981530340.

Adding to 85241020 its reverse (2014258), we get a palindrome (87255278).

The spelling of 85241020 in words is "eighty-five million, two hundred forty-one thousand, twenty".

Divisors: 1 2 4 5 10 20 4262051 8524102 17048204 21310255 42620510 85241020