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8130347 = 19427913
BaseRepresentation
bin11111000000111100101011
3120022001201222
4133000330223
54040132342
6450132255
7126051431
oct37007453
916261658
108130347
1146534a5
12288108b
1318b8874
141118d51
15aa8ed2
hex7c0f2b

8130347 has 4 divisors (see below), whose sum is σ = 8558280. Its totient is φ = 7702416.

The previous prime is 8130337. The next prime is 8130361. The reversal of 8130347 is 7430318.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8130347 - 210 = 8129323 is a prime.

It is a super-2 number, since 2×81303472 = 132205084680818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8130337) 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, 213938 + ... + 213975.

It is an arithmetic number, because the mean of its divisors is an integer number (2139570).

Almost surely, 28130347 is an apocalyptic number.

8130347 is a deficient number, since it is larger than the sum of its proper divisors (427933).

8130347 is a wasteful number, since it uses less digits than its factorization.

8130347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427932.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 8130347 is about 2851.3763343340. The cubic root of 8130347 is about 201.0803784039.

The spelling of 8130347 in words is "eight million, one hundred thirty thousand, three hundred forty-seven".

Divisors: 1 19 427913 8130347