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8090 = 25809
BaseRepresentation
bin1111110011010
3102002122
41332122
5224330
6101242
732405
oct17632
912078
108090
116095
124822
1338b4
142d3c
1525e5
hex1f9a

8090 has 8 divisors (see below), whose sum is σ = 14580. Its totient is φ = 3232.

The previous prime is 8089. The next prime is 8093. The reversal of 8090 is 908.

Adding to 8090 its reverse (908), we get a palindrome (8998).

It can be written as a sum of positive squares in 2 ways, for example, as 7921 + 169 = 89^2 + 13^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

8090 is a modest number, since divided by 90 gives 80 as remainder.

It is the 32-nd Perrin number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395 + ... + 414.

28090 is an apocalyptic number.

8090 is a deficient number, since it is larger than the sum of its proper divisors (6490).

8090 is a wasteful number, since it uses less digits than its factorization.

8090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 8090 is about 89.9444272871. The cubic root of 8090 is about 20.0747204947.

The spelling of 8090 in words is "eight thousand, ninety".

Divisors: 1 2 5 10 809 1618 4045 8090