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806020 = 225191211
BaseRepresentation
bin11000100110010000100
31111221122121
43010302010
5201243040
625135324
76564625
oct3046204
91457577
10806020
11500636
1232a544
13222b47
1416da4c
1510dc4a
hexc4c84

806020 has 24 divisors (see below), whose sum is σ = 1709568. Its totient is φ = 319200.

The previous prime is 806017. The next prime is 806023. The reversal of 806020 is 20608.

It is an interprime number because it is at equal distance from previous prime (806017) and next prime (806023).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 805985 and 806003.

It is not an unprimeable number, because it can be changed into a prime (806023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3715 + ... + 3925.

It is an arithmetic number, because the mean of its divisors is an integer number (71232).

2806020 is an apocalyptic number.

It is an amenable number.

806020 is an abundant number, since it is smaller than the sum of its proper divisors (903548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

806020 is a wasteful number, since it uses less digits than its factorization.

806020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 806020 is about 897.7861660774. The cubic root of 806020 is about 93.0640480686.

Adding to 806020 its reverse (20608), we get a palindrome (826628).

The spelling of 806020 in words is "eight hundred six thousand, twenty".

Divisors: 1 2 4 5 10 20 191 211 382 422 764 844 955 1055 1910 2110 3820 4220 40301 80602 161204 201505 403010 806020