1328715264 has 40 divisors (see below), whose sum is σ = 3539784600. Its totient is φ = 442904576.

The previous prime is 1328715259. The next prime is 1328715329. The reversal of 1328715264 is 4625178231.

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, 430989 + ... + 434060.

It is an arithmetic number, because the mean of its divisors is an integer number (88494615).

Almost surely, 2^1328715264 is an apocalyptic number.

It is an amenable number.

1328715264 is an abundant number, since it is smaller than the sum of its proper divisors (2211069336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1328715264 is an frugal number, since it uses more digits than its factorization.

1328715264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865070 (or 865054 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 1328715264 is about 36451.5467984556. The cubic root of 1328715264 is about 1099.3702356638.

The spelling of 1328715264 in words is "one billion, three hundred twenty-eight million, seven hundred fifteen thousand, two hundred sixty-four".