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130430205 = 32517170497
BaseRepresentation
bin1111100011000…
…11010011111101
3100002102112121100
413301203103331
5231342231310
620535323313
73142431663
oct761432375
9302375540
10130430205
1167696164
1237820539
1321039549
1413472c33
15b6b5ec0
hex7c634fd

130430205 has 24 divisors (see below), whose sum is σ = 239379192. Its totient is φ = 65470464.

The previous prime is 130430149. The next prime is 130430243. The reversal of 130430205 is 502034031.

130430205 is a `hidden beast` number, since 1 + 30 + 430 + 205 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 14953689 + 115476516 = 3867^2 + 10746^2 .

It is not a de Polignac number, because 130430205 - 27 = 130430077 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 84484 + ... + 86013.

It is an arithmetic number, because the mean of its divisors is an integer number (9974133).

Almost surely, 2130430205 is an apocalyptic number.

130430205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

130430205 is a deficient number, since it is larger than the sum of its proper divisors (108948987).

130430205 is a wasteful number, since it uses less digits than its factorization.

130430205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170525 (or 170522 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 130430205 is about 11420.6044060724. The cubic root of 130430205 is about 507.1378895046.

Adding to 130430205 its reverse (502034031), we get a palindrome (632464236).

The spelling of 130430205 in words is "one hundred thirty million, four hundred thirty thousand, two hundred five".

Divisors: 1 3 5 9 15 17 45 51 85 153 255 765 170497 511491 852485 1534473 2557455 2898449 7672365 8695347 14492245 26086041 43476735 130430205