1605328 has 10 divisors (see below), whose sum is σ = 3110354. Its totient is φ = 802656.

The previous prime is 1605323. The next prime is 1605341. The reversal of 1605328 is 8235061.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1507984 + 97344 = 1228^2 + 312^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605323) by changing a digit.

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 as a sum of consecutive naturals, namely, 50151 + ... + 50182.

2^1605328 is an apocalyptic number.

It is an amenable number.

1605328 is a deficient number, since it is larger than the sum of its proper divisors (1505026).

1605328 is a wasteful number, since it uses less digits than its factorization.

1605328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100341 (or 100335 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1605328 is about 1267.0153905932. The cubic root of 1605328 is about 117.0903920748.

The spelling of 1605328 in words is "one million, six hundred five thousand, three hundred twenty-eight".