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BaseRepresentation
bin11000100100110000010101
3110010021202210
4120210300111
53122121010
6350024033
7105520233
oct30446025
913107683
106442005
1136aaa79
1221a8019
13144724b
14bd9953
15873b20
hex624c15

6442005 has 8 divisors (see below), whose sum is σ = 10307232. Its totient is φ = 3435728.

The previous prime is 6442003. The next prime is 6442021. The reversal of 6442005 is 5002446.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6442005 - 21 = 6442003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214719 + ... + 214748.

It is an arithmetic number, because the mean of its divisors is an integer number (1288404).

Almost surely, 26442005 is an apocalyptic number.

It is an amenable number.

6442005 is a deficient number, since it is larger than the sum of its proper divisors (3865227).

6442005 is a wasteful number, since it uses less digits than its factorization.

6442005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429475.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 6442005 is about 2538.1105176883. The cubic root of 6442005 is about 186.0688553028.

The spelling of 6442005 in words is "six million, four hundred forty-two thousand, five".

Divisors: 1 3 5 15 429467 1288401 2147335 6442005