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130858217 = 718694031
BaseRepresentation
bin1111100110010…
…11110011101001
3100010020021201122
413303023303221
5231444430332
620552425025
73146163560
oct763136351
9303207648
10130858217
1167958796
12379a8175
13211592c9
1413544bd7
15b74cc12
hex7ccbce9

130858217 has 4 divisors (see below), whose sum is σ = 149552256. Its totient is φ = 112164180.

The previous prime is 130858171. The next prime is 130858243. The reversal of 130858217 is 712858031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 712858031 = 1913732241.

It is a cyclic number.

It is not a de Polignac number, because 130858217 - 214 = 130841833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130858297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9347009 + ... + 9347022.

It is an arithmetic number, because the mean of its divisors is an integer number (37388064).

Almost surely, 2130858217 is an apocalyptic number.

It is an amenable number.

130858217 is a deficient number, since it is larger than the sum of its proper divisors (18694039).

130858217 is an equidigital number, since it uses as much as digits as its factorization.

130858217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18694038.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 130858217 is about 11439.3276463261. The cubic root of 130858217 is about 507.6920149918.

The spelling of 130858217 in words is "one hundred thirty million, eight hundred fifty-eight thousand, two hundred seventeen".

Divisors: 1 7 18694031 130858217