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8212000 = 25532053
BaseRepresentation
bin11111010100111000100000
3120110012202011
4133110320200
54100241000
6452002304
7126541456
oct37247040
916405664
108212000
1146a9885
122900394
131916a94
14113a9d6
15ac32ba
hex7d4e20

8212000 has 48 divisors (see below), whose sum is σ = 20186712. Its totient is φ = 3283200.

The previous prime is 8211991. The next prime is 8212019. The reversal of 8212000 is 2128.

It can be written as a sum of positive squares in 4 ways, for example, as 2471184 + 5740816 = 1572^2 + 2396^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2974 + ... + 5026.

Almost surely, 28212000 is an apocalyptic number.

8212000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8212000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10093356).

8212000 is an abundant number, since it is smaller than the sum of its proper divisors (11974712).

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

8212000 is a wasteful number, since it uses less digits than its factorization.

8212000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078 (or 2060 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 8212000 is about 2865.6587375331. The cubic root of 8212000 is about 201.7512868780.

Adding to 8212000 its reverse (2128), we get a palindrome (8214128).

The spelling of 8212000 in words is "eight million, two hundred twelve thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 125 160 200 250 400 500 800 1000 2000 2053 4000 4106 8212 10265 16424 20530 32848 41060 51325 65696 82120 102650 164240 205300 256625 328480 410600 513250 821200 1026500 1642400 2053000 4106000 8212000