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86130985 = 5157109721
BaseRepresentation
bin1010010001001…
…00000100101001
320000001220111111
411020210010221
5134022142420
612314030321
72064046513
oct510440451
9200056444
1086130985
1144689536
1224a183a1
1314ac8ba5
14b620bb3
15786545a
hex5224129

86130985 has 8 divisors (see below), whose sum is σ = 104016456. Its totient is φ = 68465280.

The previous prime is 86130983. The next prime is 86130997. The reversal of 86130985 is 58903168.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13897984 + 72233001 = 3728^2 + 8499^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86130985 - 21 = 86130983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86130983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54076 + ... + 55645.

It is an arithmetic number, because the mean of its divisors is an integer number (13002057).

Almost surely, 286130985 is an apocalyptic number.

It is an amenable number.

86130985 is a deficient number, since it is larger than the sum of its proper divisors (17885471).

86130985 is a wasteful number, since it uses less digits than its factorization.

86130985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109883.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 86130985 is about 9280.6780463498. The cubic root of 86130985 is about 441.6244788627.

The spelling of 86130985 in words is "eighty-six million, one hundred thirty thousand, nine hundred eighty-five".

Divisors: 1 5 157 785 109721 548605 17226197 86130985