Search a number
-
+
1005032005 = 5238184421
BaseRepresentation
bin111011111001111…
…001001001000101
32121001010220201121
4323321321021011
54024242011010
6243421153541
733622426315
oct7371711105
92531126647
101005032005
1147635046a
122406bb8b1
131302ac6c3
149769b445
155d3773da
hex3be79245

1005032005 has 8 divisors (see below), whose sum is σ = 1206559224. Its totient is φ = 803678400.

The previous prime is 1005031987. The next prime is 1005032009. The reversal of 1005032005 is 5002305001.

It can be written as a sum of positive squares in 4 ways, for example, as 53494596 + 951537409 = 7314^2 + 30847^2 .

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

It is not a de Polignac number, because 1005032005 - 29 = 1005031493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1005032005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005032009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30306 + ... + 54115.

It is an arithmetic number, because the mean of its divisors is an integer number (150819903).

Almost surely, 21005032005 is an apocalyptic number.

It is an amenable number.

1005032005 is a deficient number, since it is larger than the sum of its proper divisors (201527219).

1005032005 is an equidigital number, since it uses as much as digits as its factorization.

1005032005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86807.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 1005032005 is about 31702.2397473743. The cubic root of 1005032005 is about 1001.6745293862.

Adding to 1005032005 its reverse (5002305001), we get a palindrome (6007337006).

The spelling of 1005032005 in words is "one billion, five million, thirty-two thousand, five".

Divisors: 1 5 2381 11905 84421 422105 201006401 1005032005