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8212012 = 222389261
BaseRepresentation
bin11111010100111000101100
3120110012202121
4133110320230
54100241022
6452002324
7126541504
oct37247054
916405677
108212012
1146a9896
1229003a4
131916aa3
14113aa04
15ac32c7
hex7d4e2c

8212012 has 12 divisors (see below), whose sum is σ = 14996016. Its totient is φ = 3927440.

The previous prime is 8211991. The next prime is 8212019. The reversal of 8212012 is 2102128.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8212019) 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, 44539 + ... + 44722.

It is an arithmetic number, because the mean of its divisors is an integer number (1249668).

Almost surely, 28212012 is an apocalyptic number.

It is an amenable number.

8212012 is a deficient number, since it is larger than the sum of its proper divisors (6784004).

8212012 is a wasteful number, since it uses less digits than its factorization.

8212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89288 (or 89286 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 8212012 is about 2865.6608312918. The cubic root of 8212012 is about 201.7513851494.

The spelling of 8212012 in words is "eight million, two hundred twelve thousand, twelve".

Divisors: 1 2 4 23 46 92 89261 178522 357044 2053003 4106006 8212012