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206804 = 22134197
BaseRepresentation
bin110010011111010100
3101111200102
4302133110
523104204
64233232
71520633
oct623724
9344612
10206804
11131414
129b818
1373190
145551a
154141e
hex327d4

206804 has 24 divisors (see below), whose sum is σ = 403368. Its totient is φ = 92160.

The previous prime is 206803. The next prime is 206807. The reversal of 206804 is 408602.

It can be written as a sum of positive squares in 4 ways, for example, as 2500 + 204304 = 50^2 + 452^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206803) 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, 2084 + ... + 2180.

It is an arithmetic number, because the mean of its divisors is an integer number (16807).

2206804 is an apocalyptic number.

It is an amenable number.

206804 is a deficient number, since it is larger than the sum of its proper divisors (196564).

206804 is a wasteful number, since it uses less digits than its factorization.

206804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 206804 is about 454.7570780098. The cubic root of 206804 is about 59.1361406597.

The spelling of 206804 in words is "two hundred six thousand, eight hundred four".

Divisors: 1 2 4 13 26 41 52 82 97 164 194 388 533 1066 1261 2132 2522 3977 5044 7954 15908 51701 103402 206804