1328597312 has 56 divisors (see below), whose sum is σ = 3016666560. Its totient is φ = 568719360.

The previous prime is 1328597267. The next prime is 1328597321. The reversal of 1328597312 is 2137958231.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 1328597312.

It is a congruent number.

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, 608639 + ... + 610817.

Almost surely, 2^1328597312 is an apocalyptic number.

It is an amenable number.

1328597312 is an abundant number, since it is smaller than the sum of its proper divisors (1688069248).

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

1328597312 is a wasteful number, since it uses less digits than its factorization.

1328597312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3559 (or 3549 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 1328597312 is about 36449.9288339497. The cubic root of 1328597312 is about 1099.3377037991.

The spelling of 1328597312 in words is "one billion, three hundred twenty-eight million, five hundred ninety-seven thousand, three hundred twelve".