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105096905 = 521019381
BaseRepresentation
bin1100100001110…
…10011011001001
321022202110211222
412100322123021
5203401100110
614232331425
72414210654
oct620723311
9238673758
10105096905
1154362951
122b243b75
1318a09724
14dd5a89b
15935ec55
hex643a6c9

105096905 has 4 divisors (see below), whose sum is σ = 126116292. Its totient is φ = 84077520.

The previous prime is 105096857. The next prime is 105096917. The reversal of 105096905 is 509690501.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27709696 + 77387209 = 5264^2 + 8797^2 .

It is not a de Polignac number, because 105096905 - 224 = 88319689 is a prime.

It is a super-2 number, since 2×1050969052 = 22090718881158050, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10509686 + ... + 10509695.

It is an arithmetic number, because the mean of its divisors is an integer number (31529073).

Almost surely, 2105096905 is an apocalyptic number.

It is an amenable number.

105096905 is a deficient number, since it is larger than the sum of its proper divisors (21019387).

105096905 is an equidigital number, since it uses as much as digits as its factorization.

105096905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21019386.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 105096905 is about 10251.6781553071. The cubic root of 105096905 is about 471.9144861480.

The spelling of 105096905 in words is "one hundred five million, ninety-six thousand, nine hundred five".

Divisors: 1 5 21019381 105096905