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80804 = 2220201
BaseRepresentation
bin10011101110100100
311002211202
4103232210
510041204
61422032
7454403
oct235644
9132752
1080804
1155789
123a918
132aa19
142163a
1518e1e
hex13ba4

80804 has 6 divisors (see below), whose sum is σ = 141414. Its totient is φ = 40400.

The previous prime is 80803. The next prime is 80809. The reversal of 80804 is 40808.

80804 = T199 + T200 + ... + T202.

It can be written as a sum of positive squares in only one way, i.e., 40804 + 40000 = 202^2 + 200^2 .

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10097 + ... + 10104.

It is an arithmetic number, because the mean of its divisors is an integer number (23569).

280804 is an apocalyptic number.

It is an amenable number.

80804 is a deficient number, since it is larger than the sum of its proper divisors (60610).

80804 is a wasteful number, since it uses less digits than its factorization.

80804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20205 (or 20203 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 80804 is about 284.2604439594. The cubic root of 80804 is about 43.2325600439.

The spelling of 80804 in words is "eighty thousand, eight hundred four".

Divisors: 1 2 4 20201 40402 80804