1530404 has 6 divisors (see below), whose sum is σ = 2678214. Its totient is φ = 765200.

The previous prime is 1530349. The next prime is 1530409. The reversal of 1530404 is 4040351.

1530404 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in only one way, i.e., 906304 + 624100 = 952^2 + 790^2 .

It is not an unprimeable number, because it can be changed into a prime (1530409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191297 + ... + 191304.

It is an arithmetic number, because the mean of its divisors is an integer number (446369).

2^1530404 is an apocalyptic number.

It is an amenable number.

1530404 is a deficient number, since it is larger than the sum of its proper divisors (1147810).

1530404 is a wasteful number, since it uses less digits than its factorization.

1530404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382605 (or 382603 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1530404 is about 1237.0949842272. The cubic root of 1530404 is about 115.2396765660.

Adding to 1530404 its reverse (4040351), we get a palindrome (5570755).

The spelling of 1530404 in words is "one million, five hundred thirty thousand, four hundred four".