Search a number
-
+
8212875 = 353112181
BaseRepresentation
bin11111010101000110001011
3120110020221120
4133111012023
54100303000
6452010323
7126544146
oct37250613
916406846
108212875
1146aa500
1229009a3
1319172b8
14113b05d
15ac36a0
hex7d518b

8212875 has 48 divisors (see below), whose sum is σ = 15104544. Its totient is φ = 3960000.

The previous prime is 8212873. The next prime is 8212877. The reversal of 8212875 is 5782128.

8212875 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8212873) and next prime (8212877).

It is not a de Polignac number, because 8212875 - 21 = 8212873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8212873) 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 47 ways as a sum of consecutive naturals, for example, 45285 + ... + 45465.

It is an arithmetic number, because the mean of its divisors is an integer number (314678).

Almost surely, 28212875 is an apocalyptic number.

8212875 is a deficient number, since it is larger than the sum of its proper divisors (6891669).

8212875 is a wasteful number, since it uses less digits than its factorization.

8212875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 200 counting only the distinct ones).

The product of its digits is 8960, while the sum is 33.

The square root of 8212875 is about 2865.8114034249. The cubic root of 8212875 is about 201.7584522500.

The spelling of 8212875 in words is "eight million, two hundred twelve thousand, eight hundred seventy-five".

Divisors: 1 3 5 11 15 25 33 55 75 121 125 165 181 275 363 375 543 605 825 905 1375 1815 1991 2715 3025 4125 4525 5973 9075 9955 13575 15125 21901 22625 29865 45375 49775 65703 67875 109505 149325 248875 328515 547525 746625 1642575 2737625 8212875