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8219212 = 228632381
BaseRepresentation
bin11111010110101001001100
3120110120122021
4133112221030
54101003322
6452055524
7126601501
oct37265114
916416567
108219212
114704241
1229045a4
13191a151
14113d4a8
15ac54c7
hex7d6a4c

8219212 has 12 divisors (see below), whose sum is σ = 14406336. Its totient is φ = 4103120.

The previous prime is 8219207. The next prime is 8219213. The reversal of 8219212 is 2129128.

It is not an unprimeable number, because it can be changed into a prime (8219213) 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 3 ways as a sum of consecutive naturals, for example, 2262 + ... + 4642.

It is an arithmetic number, because the mean of its divisors is an integer number (1200528).

Almost surely, 28219212 is an apocalyptic number.

It is an amenable number.

8219212 is a deficient number, since it is larger than the sum of its proper divisors (6187124).

8219212 is a wasteful number, since it uses less digits than its factorization.

8219212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3248 (or 3246 counting only the distinct ones).

The product of its digits is 576, while the sum is 25.

The square root of 8219212 is about 2866.9168107917. The cubic root of 8219212 is about 201.8103307382.

The spelling of 8219212 in words is "eight million, two hundred nineteen thousand, two hundred twelve".

Divisors: 1 2 4 863 1726 2381 3452 4762 9524 2054803 4109606 8219212