1328747520 has 352 divisors, whose sum is σ = 4657334400. Its totient is φ = 322043904.

The previous prime is 1328747509. The next prime is 1328747569. The reversal of 1328747520 is 257478231.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8463282 + ... + 8463438.

Almost surely, 2^1328747520 is an apocalyptic number.

1328747520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1328747520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2328667200).

1328747520 is an abundant number, since it is smaller than the sum of its proper divisors (3328586880).

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

1328747520 is a wasteful number, since it uses less digits than its factorization.

1328747520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 1328747520 is about 36451.9892461303. The cubic root of 1328747520 is about 1099.3791317256.

The spelling of 1328747520 in words is "one billion, three hundred twenty-eight million, seven hundred forty-seven thousand, five hundred twenty".