Search a number
-
+
85285107 = 32171015519
BaseRepresentation
bin1010001010101…
…01100011110011
312221110221011200
411011111203303
5133313110412
612243542243
72053624425
oct505254363
9187427150
1085285107
1144160a66
122468a983
1314890b7b
14b480815
1577499dc
hex51558f3

85285107 has 24 divisors (see below), whose sum is σ = 131751360. Its totient is φ = 52972800.

The previous prime is 85285049. The next prime is 85285121. The reversal of 85285107 is 70158258.

It is a de Polignac number, because none of the positive numbers 2k-85285107 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (85285147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12694 + ... + 18212.

It is an arithmetic number, because the mean of its divisors is an integer number (5489640).

Almost surely, 285285107 is an apocalyptic number.

85285107 is a deficient number, since it is larger than the sum of its proper divisors (46466253).

85285107 is a wasteful number, since it uses less digits than its factorization.

85285107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5643 (or 5640 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 85285107 is about 9234.9936112593. The cubic root of 85285107 is about 440.1740134715.

The spelling of 85285107 in words is "eighty-five million, two hundred eighty-five thousand, one hundred seven".

Divisors: 1 3 9 17 51 101 153 303 909 1717 5151 5519 15453 16557 49671 93823 281469 557419 844407 1672257 5016771 9476123 28428369 85285107