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208630 = 2531673
BaseRepresentation
bin110010111011110110
3101121012001
4302323312
523134010
64245514
71526152
oct627366
9347161
10208630
11132824
12a089a
1373c66
1456062
1541c3a
hex32ef6

208630 has 16 divisors (see below), whose sum is σ = 388224. Its totient is φ = 80640.

The previous prime is 208627. The next prime is 208631. The reversal of 208630 is 36802.

It is a junction number, because it is equal to n+sod(n) for n = 208598 and 208607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208631) 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, 27 + ... + 646.

It is an arithmetic number, because the mean of its divisors is an integer number (24264).

2208630 is an apocalyptic number.

208630 is a deficient number, since it is larger than the sum of its proper divisors (179594).

208630 is a wasteful number, since it uses less digits than its factorization.

208630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 208630 is about 456.7603310271. The cubic root of 208630 is about 59.3096807069.

It can be divided in two parts, 2086 and 30, that added together give a square (2116 = 462).

The spelling of 208630 in words is "two hundred eight thousand, six hundred thirty".

Divisors: 1 2 5 10 31 62 155 310 673 1346 3365 6730 20863 41726 104315 208630