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7040005 = 57712833
BaseRepresentation
bin11010110110110000000101
3111020200001221
4122312300011
53300240010
6410520341
7113560540
oct32666005
914220057
107040005
113a79295
1224360b1
1315c64ab
14d13857
15940dda
hex6b6c05

7040005 has 16 divisors (see below), whose sum is σ = 9794304. Its totient is φ = 4757760.

The previous prime is 7039997. The next prime is 7040009. The reversal of 7040005 is 5000407.

It is not a de Polignac number, because 7040005 - 23 = 7039997 is a prime.

It is a Duffinian number.

7040005 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7040009) 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 15 ways as a sum of consecutive naturals, for example, 1069 + ... + 3901.

It is an arithmetic number, because the mean of its divisors is an integer number (612144).

Almost surely, 27040005 is an apocalyptic number.

It is an amenable number.

7040005 is a deficient number, since it is larger than the sum of its proper divisors (2754299).

7040005 is a wasteful number, since it uses less digits than its factorization.

7040005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916.

The product of its (nonzero) digits is 140, while the sum is 16.

The square root of 7040005 is about 2653.3007745071. The cubic root of 7040005 is about 191.6568396558.

The spelling of 7040005 in words is "seven million, forty thousand, five".

Divisors: 1 5 7 35 71 355 497 2485 2833 14165 19831 99155 201143 1005715 1408001 7040005