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6872005 = 5734007
BaseRepresentation
bin11010001101101111000101
3110221010121201
4122031233011
53224401010
6403142501
7112261000
oct32155705
913833551
106872005
113974048
122374a31
131567b9a
14cac537
1590b23a
hex68dbc5

6872005 has 16 divisors (see below), whose sum is σ = 9619200. Its totient is φ = 4711056.

The previous prime is 6871981. The next prime is 6872017. The reversal of 6872005 is 5002786.

It is not a de Polignac number, because 6872005 - 215 = 6839237 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 289 + ... + 3718.

It is an arithmetic number, because the mean of its divisors is an integer number (601200).

Almost surely, 26872005 is an apocalyptic number.

It is an amenable number.

6872005 is a deficient number, since it is larger than the sum of its proper divisors (2747195).

6872005 is an equidigital number, since it uses as much as digits as its factorization.

6872005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4033 (or 4019 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 6872005 is about 2621.4509341203. The cubic root of 6872005 is about 190.1200072879.

The spelling of 6872005 in words is "six million, eight hundred seventy-two thousand, five".

Divisors: 1 5 7 35 49 245 343 1715 4007 20035 28049 140245 196343 981715 1374401 6872005