303804 has 48 divisors (see below), whose sum is σ = 823200. Its totient is φ = 96768.

The previous prime is 303803. The next prime is 303817. The reversal of 303804 is 408303.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3084 + ... + 3180.

It is an arithmetic number, because the mean of its divisors is an integer number (17150).

2³⁰³⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 303804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (411600).

303804 is an abundant number, since it is smaller than the sum of its proper divisors (519396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

303804 is a wasteful number, since it uses less digits than its factorization.

303804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 303804 is about 551.1841797439. The cubic root of 303804 is about 67.2250544332.

The spelling of 303804 in words is "three hundred three thousand, eight hundred four".