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438048005 = 5661132541
BaseRepresentation
bin11010000111000…
…001010100000101
31010112021010220012
4122013001110011
51344120014010
6111244520005
713566226613
oct3207012405
91115233805
10438048005
112052a2a4a
12102850005
136c9a3805
144226a6b3
15286cc005
hex1a1c1505

438048005 has 8 divisors (see below), whose sum is σ = 526456824. Its totient is φ = 349905600.

The previous prime is 438047999. The next prime is 438048007. The reversal of 438048005 is 500840834.

It can be written as a sum of positive squares in 4 ways, for example, as 154529761 + 283518244 = 12431^2 + 16838^2 .

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

It is not a de Polignac number, because 438048005 - 28 = 438047749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438048007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62966 + ... + 69575.

It is an arithmetic number, because the mean of its divisors is an integer number (65807103).

Almost surely, 2438048005 is an apocalyptic number.

It is an amenable number.

438048005 is a deficient number, since it is larger than the sum of its proper divisors (88408819).

438048005 is a wasteful number, since it uses less digits than its factorization.

438048005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133207.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 438048005 is about 20929.5963888461. The cubic root of 438048005 is about 759.4640756602.

Adding to 438048005 its reverse (500840834), we get a palindrome (938888839).

The spelling of 438048005 in words is "four hundred thirty-eight million, forty-eight thousand, five".

Divisors: 1 5 661 3305 132541 662705 87609601 438048005