1324020240 has 120 divisors (see below), whose sum is σ = 4461297048. Its totient is φ = 351897600.

The previous prime is 1324020223. The next prime is 1324020251. The reversal of 1324020240 is 420204231.

It can be written as a sum of positive squares in 4 ways, for example, as 178062336 + 1145957904 = 13344^2 + 33852^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225340 + ... + 231140.

Almost surely, 2^1324020240 is an apocalyptic number.

1324020240 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 1324020240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2230648524).

1324020240 is an abundant number, since it is smaller than the sum of its proper divisors (3137276808).

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

1324020240 is a wasteful number, since it uses less digits than its factorization.

1324020240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6137 (or 6128 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1324020240 is about 36387.0889190108. The cubic root of 1324020240 is about 1098.0738302252.

Adding to 1324020240 its reverse (420204231), we get a palindrome (1744224471).

The spelling of 1324020240 in words is "one billion, three hundred twenty-four million, twenty thousand, two hundred forty".