1328563256 has 16 divisors (see below), whose sum is σ = 2510672640. Its totient is φ = 659050560.

The previous prime is 1328563231. The next prime is 1328563273. The reversal of 1328563256 is 6523658231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652805 + ... + 654836.

It is an arithmetic number, because the mean of its divisors is an integer number (156917040).

Almost surely, 2^1328563256 is an apocalyptic number.

It is an amenable number.

1328563256 is a deficient number, since it is larger than the sum of its proper divisors (1182109384).

1328563256 is a wasteful number, since it uses less digits than its factorization.

1328563256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307774 (or 1307770 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 1328563256 is about 36449.4616695501. The cubic root of 1328563256 is about 1099.3283105931.

The spelling of 1328563256 in words is "one billion, three hundred twenty-eight million, five hundred sixty-three thousand, two hundred fifty-six".