Search a number
-
+
8205680108 = 2210303199109
BaseRepresentation
bin1111010010001100…
…01011110111101100
3210011212102201222002
413221012023313230
5113301123230413
63434124111432
7410226062423
oct75106136754
923155381862
108205680108
11353098aa0a
121710095578
13a0a038922
1457bb282ba
153305c7958
hex1e918bdec

8205680108 has 12 divisors (see below), whose sum is σ = 14361406080. Its totient is φ = 4102421232.

The previous prime is 8205680101. The next prime is 8205680113. The reversal of 8205680108 is 8010865028.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (8205680101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58343 + ... + 140766.

It is an arithmetic number, because the mean of its divisors is an integer number (1196783840).

Almost surely, 28205680108 is an apocalyptic number.

It is an amenable number.

8205680108 is a deficient number, since it is larger than the sum of its proper divisors (6155725972).

8205680108 is a wasteful number, since it uses less digits than its factorization.

8205680108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209416 (or 209414 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 8205680108 is about 90585.2091017071. The cubic root of 8205680108 is about 2016.9951818287.

The spelling of 8205680108 in words is "eight billion, two hundred five million, six hundred eighty thousand, one hundred eight".

Divisors: 1 2 4 10303 20606 41212 199109 398218 796436 2051420027 4102840054 8205680108