1801304 has 8 divisors (see below), whose sum is σ = 3377460. Its totient is φ = 900648.

The previous prime is 1801297. The next prime is 1801309. The reversal of 1801304 is 4031081.

1801304 = 328² + 329² + ... + 343².

It is a happy number.

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

It is a super-2 number, since 2×1801304² = 6489392200832, which contains 22 as substring.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112574 + ... + 112589.

2^1801304 is an apocalyptic number.

It is an amenable number.

1801304 is a deficient number, since it is larger than the sum of its proper divisors (1576156).

1801304 is a wasteful number, since it uses less digits than its factorization.

1801304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225169 (or 225165 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1801304 is about 1342.1266706239. The cubic root of 1801304 is about 121.6734076038.

Adding to 1801304 its reverse (4031081), we get a palindrome (5832385).

The spelling of 1801304 in words is "one million, eight hundred one thousand, three hundred four".