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130532587 = 532462879
BaseRepresentation
bin1111100011111…
…00010011101011
3100002121202001021
413301330103223
5231404020322
620541433311
73143336323
oct761742353
9302552037
10130532587
1167756079
123786b837
1321074023
141349c283
15b6d64c7
hex7c7c4eb

130532587 has 4 divisors (see below), whose sum is σ = 132995520. Its totient is φ = 128069656.

The previous prime is 130532551. The next prime is 130532593. The reversal of 130532587 is 785235031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 130532587 - 223 = 122143979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130532287) 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, 1231387 + ... + 1231492.

It is an arithmetic number, because the mean of its divisors is an integer number (33248880).

Almost surely, 2130532587 is an apocalyptic number.

130532587 is a deficient number, since it is larger than the sum of its proper divisors (2462933).

130532587 is an equidigital number, since it uses as much as digits as its factorization.

130532587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462932.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 130532587 is about 11425.0858640100. The cubic root of 130532587 is about 507.2705484795.

The spelling of 130532587 in words is "one hundred thirty million, five hundred thirty-two thousand, five hundred eighty-seven".

Divisors: 1 53 2462879 130532587