1656328 has 8 divisors (see below), whose sum is σ = 3105630. Its totient is φ = 828160.

The previous prime is 1656323. The next prime is 1656367. The reversal of 1656328 is 8236561.

It can be written as a sum of positive squares in only one way, i.e., 842724 + 813604 = 918^2 + 902^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1656328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1656323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103513 + ... + 103528.

2^1656328 is an apocalyptic number.

It is an amenable number.

1656328 is a deficient number, since it is larger than the sum of its proper divisors (1449302).

1656328 is a wasteful number, since it uses less digits than its factorization.

1656328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207047 (or 207043 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 1656328 is about 1286.9840713855. The cubic root of 1656328 is about 118.3174445814.

The spelling of 1656328 in words is "one million, six hundred fifty-six thousand, three hundred twenty-eight".