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85463805 = 3571942839
BaseRepresentation
bin1010001100000…
…01001011111101
312221211000022010
411012001023331
5133334320210
612251441433
72055300420
oct506011375
9187730263
1085463805
1144273249
1224756279
13149242cb
14b4c99b7
157782920
hex51812fd

85463805 has 32 divisors (see below), whose sum is σ = 164505600. Its totient is φ = 37012032.

The previous prime is 85463797. The next prime is 85463809. The reversal of 85463805 is 50836458.

It is a happy number.

It is not a de Polignac number, because 85463805 - 23 = 85463797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85463809) 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 31 ways as a sum of consecutive naturals, for example, 19425 + ... + 23414.

It is an arithmetic number, because the mean of its divisors is an integer number (5140800).

Almost surely, 285463805 is an apocalyptic number.

It is an amenable number.

85463805 is a deficient number, since it is larger than the sum of its proper divisors (79041795).

85463805 is a wasteful number, since it uses less digits than its factorization.

85463805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42873.

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 85463805 is about 9244.6635958265. The cubic root of 85463805 is about 440.4812314017.

It can be divided in two parts, 85463 and 805, that added together give a palindrome (86268).

The spelling of 85463805 in words is "eighty-five million, four hundred sixty-three thousand, eight hundred five".

Divisors: 1 3 5 7 15 19 21 35 57 95 105 133 285 399 665 1995 42839 128517 214195 299873 642585 813941 899619 1499365 2441823 4069705 4498095 5697587 12209115 17092761 28487935 85463805