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105044705 = 521008941
BaseRepresentation
bin1100100001011…
…01101011100001
321022122211020122
412100231223201
5203342412310
614231250025
72413602533
oct620555341
9238584218
10105044705
1154327707
122b219915
13189bba3c
14dd45853
15934e555
hex642dae1

105044705 has 4 divisors (see below), whose sum is σ = 126053652. Its totient is φ = 84035760.

The previous prime is 105044669. The next prime is 105044707. The reversal of 105044705 is 507440501.

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 38328481 + 66716224 = 6191^2 + 8168^2 .

It is not a de Polignac number, because 105044705 - 28 = 105044449 is a prime.

It is a super-2 number, since 2×1050447052 = 22068780097074050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105044707) by changing a digit.

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, 10504466 + ... + 10504475.

It is an arithmetic number, because the mean of its divisors is an integer number (31513413).

Almost surely, 2105044705 is an apocalyptic number.

It is an amenable number.

105044705 is a deficient number, since it is larger than the sum of its proper divisors (21008947).

105044705 is an equidigital number, since it uses as much as digits as its factorization.

105044705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21008946.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 105044705 is about 10249.1319144599. The cubic root of 105044705 is about 471.8363423443.

The spelling of 105044705 in words is "one hundred five million, forty-four thousand, seven hundred five".

Divisors: 1 5 21008941 105044705