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1087682105 = 5217536421
BaseRepresentation
bin100000011010100…
…1011011000111001
32210210122222100102
41000311023120321
54211421311410
6255532445145
735645100566
oct10065133071
92723588312
101087682105
11508a71734
122643197b5
1314445a0a3
14a465386d
15657512a5
hex40d4b639

1087682105 has 4 divisors (see below), whose sum is σ = 1305218532. Its totient is φ = 870145680.

The previous prime is 1087682041. The next prime is 1087682107. The reversal of 1087682105 is 5012867801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5012867801 = 30559164039.

It can be written as a sum of positive squares in 2 ways, for example, as 582691321 + 504990784 = 24139^2 + 22472^2 .

It is not a de Polignac number, because 1087682105 - 26 = 1087682041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1087682107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108768206 + ... + 108768215.

It is an arithmetic number, because the mean of its divisors is an integer number (326304633).

Almost surely, 21087682105 is an apocalyptic number.

It is an amenable number.

1087682105 is a deficient number, since it is larger than the sum of its proper divisors (217536427).

1087682105 is an equidigital number, since it uses as much as digits as its factorization.

1087682105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217536426.

The product of its (nonzero) digits is 26880, while the sum is 38.

The square root of 1087682105 is about 32980.0258489893. The cubic root of 1087682105 is about 1028.4124552358.

The spelling of 1087682105 in words is "one billion, eighty-seven million, six hundred eighty-two thousand, one hundred five".

Divisors: 1 5 217536421 1087682105