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130709887 = 7112154321
BaseRepresentation
bin1111100101001…
…11100101111111
3100002221202020221
413302213211333
5231430204022
620545322211
73145005250
oct762474577
9302852227
10130709887
1167867300
1237936367
1321106939
1413506b27
15b71dcc7
hex7ca797f

130709887 has 12 divisors (see below), whose sum is σ = 164198608. Its totient is φ = 101851200.

The previous prime is 130709881. The next prime is 130709921. The reversal of 130709887 is 788907031.

It is not a de Polignac number, because 130709887 - 219 = 130185599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130709881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76314 + ... + 78007.

Almost surely, 2130709887 is an apocalyptic number.

130709887 is a deficient number, since it is larger than the sum of its proper divisors (33488721).

130709887 is a wasteful number, since it uses less digits than its factorization.

130709887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154350 (or 154339 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 130709887 is about 11432.8424724563. The cubic root of 130709887 is about 507.5001166412.

It can be divided in two parts, 130 and 709887, that added together give a palindrome (710017).

The spelling of 130709887 in words is "one hundred thirty million, seven hundred nine thousand, eight hundred eighty-seven".

Divisors: 1 7 11 77 121 847 154321 1080247 1697531 11882717 18672841 130709887