1000328520 has 32 divisors (see below), whose sum is σ = 3000985920. Its totient is φ = 266754240.

The previous prime is 1000328503. The next prime is 1000328521. The reversal of 1000328520 is 258230001.

It is not an unprimeable number, because it can be changed into a prime (1000328521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4167916 + ... + 4168155.

It is an arithmetic number, because the mean of its divisors is an integer number (93780810).

Almost surely, 2^1000328520 is an apocalyptic number.

1000328520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000328520 is an abundant number, since it is smaller than the sum of its proper divisors (2000657400).

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

1000328520 is a wasteful number, since it uses less digits than its factorization.

1000328520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8336085 (or 8336081 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1000328520 is about 31627.9705324259. The cubic root of 1000328520 is about 1000.1094946771.

Adding to 1000328520 its reverse (258230001), we get a palindrome (1258558521).

The spelling of 1000328520 in words is "one billion, three hundred twenty-eight thousand, five hundred twenty".