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238080805 = 547616161
BaseRepresentation
bin11100011000011…
…01001100100101
3121120222202110121
432030031030211
5441422041210
635342521541
75620440064
oct1614151445
9546882417
10238080805
111124326a6
12678962b1
133a42b421
14238961db
1515d7c6da
hexe30d325

238080805 has 4 divisors (see below), whose sum is σ = 285696972. Its totient is φ = 190464640.

The previous prime is 238080761. The next prime is 238080827. The reversal of 238080805 is 508080832.

It is a happy number.

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 70274689 + 167806116 = 8383^2 + 12954^2 .

It is not a de Polignac number, because 238080805 - 213 = 238072613 is a prime.

It is a Duffinian number.

It is a congruent 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, 23808076 + ... + 23808085.

It is an arithmetic number, because the mean of its divisors is an integer number (71424243).

Almost surely, 2238080805 is an apocalyptic number.

It is an amenable number.

238080805 is a deficient number, since it is larger than the sum of its proper divisors (47616167).

238080805 is an equidigital number, since it uses as much as digits as its factorization.

238080805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47616166.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 238080805 is about 15429.8673033827. The cubic root of 238080805 is about 619.7855701411.

The spelling of 238080805 in words is "two hundred thirty-eight million, eighty thousand, eight hundred five".

Divisors: 1 5 47616161 238080805