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8213127 = 3131971069
BaseRepresentation
bin11111010101001010000111
3120110021021220
4133111022013
54100310002
6452011423
7126544656
oct37251207
916407256
108213127
1146aa70a
122900b73
131917450
14113b19d
15ac37bc
hex7d5287

8213127 has 16 divisors (see below), whose sum is σ = 11864160. Its totient is φ = 5023872.

The previous prime is 8213123. The next prime is 8213131. The reversal of 8213127 is 7213128.

8213127 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 (8213123) and next prime (8213131).

It is not a de Polignac number, because 8213127 - 22 = 8213123 is a prime.

8213127 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8213097 and 8213106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8213123) 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 15 ways as a sum of consecutive naturals, for example, 7149 + ... + 8217.

It is an arithmetic number, because the mean of its divisors is an integer number (741510).

Almost surely, 28213127 is an apocalyptic number.

8213127 is a deficient number, since it is larger than the sum of its proper divisors (3651033).

8213127 is a wasteful number, since it uses less digits than its factorization.

8213127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282.

The product of its digits is 672, while the sum is 24.

The square root of 8213127 is about 2865.8553696933. The cubic root of 8213127 is about 201.7605157828.

Subtracting from 8213127 its reverse (7213128), we obtain a palindrome (999999).

The spelling of 8213127 in words is "eight million, two hundred thirteen thousand, one hundred twenty-seven".

Divisors: 1 3 13 39 197 591 1069 2561 3207 7683 13897 41691 210593 631779 2737709 8213127