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130678209 = 32139104459
BaseRepresentation
bin1111100100111…
…11110111000001
3100002220010210200
413302133313001
5231423200314
620544515413
73144514014
oct762376701
9302803720
10130678209
1167845522
123791bb69
13210c53ac
14134d937b
15b714709
hex7c9fdc1

130678209 has 12 divisors (see below), whose sum is σ = 190117200. Its totient is φ = 86491224.

The previous prime is 130678123. The next prime is 130678211. The reversal of 130678209 is 902876031.

It is not a de Polignac number, because 130678209 - 212 = 130674113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130678259) 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 11 ways as a sum of consecutive naturals, for example, 50979 + ... + 53480.

It is an arithmetic number, because the mean of its divisors is an integer number (15843100).

Almost surely, 2130678209 is an apocalyptic number.

It is an amenable number.

130678209 is a deficient number, since it is larger than the sum of its proper divisors (59438991).

130678209 is a wasteful number, since it uses less digits than its factorization.

130678209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104604 (or 104601 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 130678209 is about 11431.4569937519. The cubic root of 130678209 is about 507.4591151837.

The spelling of 130678209 in words is "one hundred thirty million, six hundred seventy-eight thousand, two hundred nine".

Divisors: 1 3 9 139 417 1251 104459 313377 940131 14519801 43559403 130678209