1320887584 has 48 divisors (see below), whose sum is σ = 2642008320. Its totient is φ = 649958400.

The previous prime is 1320887569. The next prime is 1320887593. The reversal of 1320887584 is 4857880231.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1013077 + ... + 1014379.

It is an arithmetic number, because the mean of its divisors is an integer number (55041840).

Almost surely, 2^1320887584 is an apocalyptic number.

It is an amenable number.

1320887584 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1320887584 is a wasteful number, since it uses less digits than its factorization.

1320887584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793 (or 1785 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The square root of 1320887584 is about 36344.0171692674. The cubic root of 1320887584 is about 1097.2071254257.

The spelling of 1320887584 in words is "one billion, three hundred twenty million, eight hundred eighty-seven thousand, five hundred eighty-four".