1604044 has 24 divisors (see below), whose sum is σ = 3061520. Its totient is φ = 730944.

The previous prime is 1604021. The next prime is 1604051. The reversal of 1604044 is 4404061.

1604044 is nontrivially palindromic in base 3.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5527 + ... + 5809.

2^1604044 is an apocalyptic number.

It is an amenable number.

1604044 is a deficient number, since it is larger than the sum of its proper divisors (1457476).

1604044 is a wasteful number, since it uses less digits than its factorization.

1604044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1604044 is about 1266.5085866270. The cubic root of 1604044 is about 117.0591660232.

The spelling of 1604044 in words is "one million, six hundred four thousand, forty-four".