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8131214 = 2713431039
BaseRepresentation
bin11111000001001010001110
3120022002221002
4133001022032
54040144324
6450140302
7126054110
oct37011216
916262832
108131214
114654113
122881692
1318b9090
1411193b0
15aa93ae
hex7c128e

8131214 has 32 divisors (see below), whose sum is σ = 15375360. Its totient is φ = 3138912.

The previous prime is 8131177. The next prime is 8131229. The reversal of 8131214 is 4121318.

It is a super-2 number, since 2×81312142 = 132233282227592, which contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 7307 + ... + 8345.

It is an arithmetic number, because the mean of its divisors is an integer number (480480).

Almost surely, 28131214 is an apocalyptic number.

8131214 is a deficient number, since it is larger than the sum of its proper divisors (7244146).

8131214 is a wasteful number, since it uses less digits than its factorization.

8131214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104.

The product of its digits is 192, while the sum is 20.

The square root of 8131214 is about 2851.5283621244. The cubic root of 8131214 is about 201.0875257205.

The spelling of 8131214 in words is "eight million, one hundred thirty-one thousand, two hundred fourteen".

Divisors: 1 2 7 13 14 26 43 86 91 182 301 559 602 1039 1118 2078 3913 7273 7826 13507 14546 27014 44677 89354 94549 189098 312739 580801 625478 1161602 4065607 8131214