1604384 has 24 divisors (see below), whose sum is σ = 3187548. Its totient is φ = 794880.

The previous prime is 1604381. The next prime is 1604399. The reversal of 1604384 is 4834061.

It can be written as a sum of positive squares in 2 ways, for example, as 1210000 + 394384 = 1100^2 + 628^2 .

It is not an unprimeable number, because it can be changed into a prime (1604381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5654 + ... + 5930.

2^1604384 is an apocalyptic number.

It is an amenable number.

1604384 is a deficient number, since it is larger than the sum of its proper divisors (1583164).

1604384 is a wasteful number, since it uses less digits than its factorization.

1604384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1604384 is about 1266.6428067928. The cubic root of 1604384 is about 117.0674362254.

The spelling of 1604384 in words is "one million, six hundred four thousand, three hundred eighty-four".