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86804 = 2221701
BaseRepresentation
bin10101001100010100
311102001222
4111030110
510234204
61505512
7511034
oct251424
9142058
1086804
115a243
1242298
1330683
14238c4
151aabe
hex15314

86804 has 6 divisors (see below), whose sum is σ = 151914. Its totient is φ = 43400.

The previous prime is 86783. The next prime is 86813. The reversal of 86804 is 40868.

It can be written as a sum of positive squares in only one way, i.e., 84100 + 2704 = 290^2 + 52^2 .

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

86804 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 10847 + ... + 10854.

It is an arithmetic number, because the mean of its divisors is an integer number (25319).

286804 is an apocalyptic number.

It is an amenable number.

86804 is a deficient number, since it is larger than the sum of its proper divisors (65110).

86804 is a wasteful number, since it uses less digits than its factorization.

86804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21705 (or 21703 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 86804 is about 294.6251856173. The cubic root of 86804 is about 44.2771758971.

The spelling of 86804 in words is "eighty-six thousand, eight hundred four".

Divisors: 1 2 4 21701 43402 86804