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208130 = 25131601
BaseRepresentation
bin110010110100000010
3101120111112
4302310002
523130010
64243322
71524536
oct626402
9346445
10208130
1113240a
12a0542
1373970
1455bc6
1541a05
hex32d02

208130 has 16 divisors (see below), whose sum is σ = 403704. Its totient is φ = 76800.

The previous prime is 208129. The next prime is 208139. The reversal of 208130 is 31802.

It can be written as a sum of positive squares in 4 ways, for example, as 190969 + 17161 = 437^2 + 131^2 .

It is not an unprimeable number, because it can be changed into a prime (208139) 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, 671 + ... + 930.

2208130 is an apocalyptic number.

208130 is a deficient number, since it is larger than the sum of its proper divisors (195574).

208130 is a wasteful number, since it uses less digits than its factorization.

208130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 208130 is about 456.2126697057. The cubic root of 208130 is about 59.2622625310.

Adding to 208130 its reverse (31802), we get a palindrome (239932).

The spelling of 208130 in words is "two hundred eight thousand, one hundred thirty".

Divisors: 1 2 5 10 13 26 65 130 1601 3202 8005 16010 20813 41626 104065 208130