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206020 = 22510301
BaseRepresentation
bin110010010011000100
3101110121101
4302103010
523043040
64225444
71515433
oct622304
9343541
10206020
11130871
129b284
1372a09
145511a
154109a
hex324c4

206020 has 12 divisors (see below), whose sum is σ = 432684. Its totient is φ = 82400.

The previous prime is 206009. The next prime is 206021. The reversal of 206020 is 20602.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 147456 + 58564 = 384^2 + 242^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 205988 and 206006.

It is not an unprimeable number, because it can be changed into a prime (206021) 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 3 ways as a sum of consecutive naturals, for example, 5131 + ... + 5170.

It is an arithmetic number, because the mean of its divisors is an integer number (36057).

2206020 is an apocalyptic number.

206020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206020 is an abundant number, since it is smaller than the sum of its proper divisors (226664).

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

206020 is a wasteful number, since it uses less digits than its factorization.

206020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10310 (or 10308 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 206020 is about 453.8942608141. The cubic root of 206020 is about 59.0613170820.

206020 divided by its sum of digits (10) gives a palindrome (20602).

Adding to 206020 its reverse (20602), we get a palindrome (226622).

It can be divided in two parts, 2060 and 20, that added together give a triangular number (2080 = T64).

The spelling of 206020 in words is "two hundred six thousand, twenty".

Divisors: 1 2 4 5 10 20 10301 20602 41204 51505 103010 206020