220804 has 6 divisors (see below), whose sum is σ = 386414. Its totient is φ = 110400.

The previous prime is 220793. The next prime is 220807. The reversal of 220804 is 408022.

220804 is nontrivially palindromic in base 15.

220804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

220804 is an esthetic number in base 15, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in only one way, i.e., 129600 + 91204 = 360^2 + 302^2 .

It is not an unprimeable number, because it can be changed into a prime (220807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27597 + ... + 27604.

2²²⁰⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

220804 is a deficient number, since it is larger than the sum of its proper divisors (165610).

220804 is a wasteful number, since it uses less digits than its factorization.

220804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55205 (or 55203 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 220804 is about 469.8978612422. The cubic root of 220804 is about 60.4415572959.

Adding to 220804 its reverse (408022), we get a palindrome (628826).

It can be divided in two parts, 220 and 804, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 220804 in words is "two hundred twenty thousand, eight hundred four".