1328564 has 12 divisors (see below), whose sum is σ = 2381988. Its totient is φ = 648000.

The previous prime is 1328563. The next prime is 1328573. The reversal of 1328564 is 4658231.

It can be written as a sum of positive squares in 2 ways, for example, as 795664 + 532900 = 892^2 + 730^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328563) 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, 3887 + ... + 4214.

It is an arithmetic number, because the mean of its divisors is an integer number (198499).

2^1328564 is an apocalyptic number.

It is an amenable number.

1328564 is a deficient number, since it is larger than the sum of its proper divisors (1053424).

1328564 is a wasteful number, since it uses less digits than its factorization.

1328564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8146 (or 8144 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 1328564 is about 1152.6335063670. The cubic root of 1328564 is about 109.9328515802.

The spelling of 1328564 in words is "one million, three hundred twenty-eight thousand, five hundred sixty-four".