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130601805 = 3553164279
BaseRepresentation
bin1111100100011…
…01001101001101
3100002202020222220
413302031031031
5231413224210
620543125553
73144045165
oct762151515
9302666886
10130601805
11677a3084
12378a38b9
1321099699
14134b95a5
15b6ebc70
hex7c8d34d

130601805 has 16 divisors (see below), whose sum is σ = 212906880. Its totient is φ = 68339648.

The previous prime is 130601777. The next prime is 130601831. The reversal of 130601805 is 508106031.

It is a cyclic number.

It is not a de Polignac number, because 130601805 - 210 = 130600781 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81345 + ... + 82934.

It is an arithmetic number, because the mean of its divisors is an integer number (13306680).

Almost surely, 2130601805 is an apocalyptic number.

130601805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

130601805 is a deficient number, since it is larger than the sum of its proper divisors (82305075).

130601805 is a wasteful number, since it uses less digits than its factorization.

130601805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164340.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 130601805 is about 11428.1146739084. The cubic root of 130601805 is about 507.3601967150.

Adding to 130601805 its reverse (508106031), we get a palindrome (638707836).

The spelling of 130601805 in words is "one hundred thirty million, six hundred one thousand, eight hundred five".

Divisors: 1 3 5 15 53 159 265 795 164279 492837 821395 2464185 8706787 26120361 43533935 130601805