1328727488 has 56 divisors (see below), whose sum is σ = 2881182960. Its totient is φ = 602961920.

The previous prime is 1328727473. The next prime is 1328727511. The reversal of 1328727488 is 8847278231.

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, 568370 + ... + 570702.

Almost surely, 2^1328727488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1328727488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1440591480).

1328727488 is an abundant number, since it is smaller than the sum of its proper divisors (1552455472).

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

1328727488 is a wasteful number, since it uses less digits than its factorization.

1328727488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165 (or 3155 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 50.

The square root of 1328727488 is about 36451.7144727103. The cubic root of 1328727488 is about 1099.3736070057.

The spelling of 1328727488 in words is "one billion, three hundred twenty-eight million, seven hundred twenty-seven thousand, four hundred eighty-eight".