1328435656 has 32 divisors (see below), whose sum is σ = 2615117760. Its totient is φ = 631426752.

The previous prime is 1328435651. The next prime is 1328435657. The reversal of 1328435656 is 6565348231.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1328435651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7846 + ... + 52138.

It is an arithmetic number, because the mean of its divisors is an integer number (81722430).

Almost surely, 2^1328435656 is an apocalyptic number.

It is an amenable number.

1328435656 is a deficient number, since it is larger than the sum of its proper divisors (1286682104).

1328435656 is a wasteful number, since it uses less digits than its factorization.

1328435656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44485 (or 44481 counting only the distinct ones).

The product of its digits is 518400, while the sum is 43.

The square root of 1328435656 is about 36447.7112587334. The cubic root of 1328435656 is about 1099.2931149829.

The spelling of 1328435656 in words is "one billion, three hundred twenty-eight million, four hundred thirty-five thousand, six hundred fifty-six".