1813304 has 8 divisors (see below), whose sum is σ = 3399960. Its totient is φ = 906648.

The previous prime is 1813291. The next prime is 1813313. The reversal of 1813304 is 4033181.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113324 + ... + 113339.

It is an arithmetic number, because the mean of its divisors is an integer number (424995).

2^1813304 is an apocalyptic number.

It is an amenable number.

1813304 is a deficient number, since it is larger than the sum of its proper divisors (1586656).

1813304 is a wasteful number, since it uses less digits than its factorization.

1813304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226669 (or 226665 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1813304 is about 1346.5897667813. The cubic root of 1813304 is about 121.9429994407.

Adding to 1813304 its reverse (4033181), we get a palindrome (5846485).

The spelling of 1813304 in words is "one million, eight hundred thirteen thousand, three hundred four".