1324440520 has 64 divisors (see below), whose sum is σ = 3225600000. Its totient is φ = 486528768.

The previous prime is 1324440503. The next prime is 1324440521. The reversal of 1324440520 is 250444231.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1324440521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97081 + ... + 109879.

It is an arithmetic number, because the mean of its divisors is an integer number (50400000).

Almost surely, 2^1324440520 is an apocalyptic number.

1324440520 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 1324440520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1612800000).

1324440520 is an abundant number, since it is smaller than the sum of its proper divisors (1901159480).

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

1324440520 is a wasteful number, since it uses less digits than its factorization.

1324440520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13022 (or 13018 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1324440520 is about 36392.8635861483. The cubic root of 1324440520 is about 1098.1900040905.

Adding to 1324440520 its reverse (250444231), we get a palindrome (1574884751).

The spelling of 1324440520 in words is "one billion, three hundred twenty-four million, four hundred forty thousand, five hundred twenty".