1323044240 has 80 divisors (see below), whose sum is σ = 3525845760. Its totient is φ = 452282880.

The previous prime is 1323044231. The next prime is 1323044251. The reversal of 1323044240 is 424403231.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197750 + ... + 204330.

It is an arithmetic number, because the mean of its divisors is an integer number (44073072).

Almost surely, 2^1323044240 is an apocalyptic number.

1323044240 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 1323044240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1762922880).

1323044240 is an abundant number, since it is smaller than the sum of its proper divisors (2202801520).

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

1323044240 is a wasteful number, since it uses less digits than its factorization.

1323044240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6960 (or 6954 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1323044240 is about 36373.6750961461. The cubic root of 1323044240 is about 1097.8039492790.

Adding to 1323044240 its reverse (424403231), we get a palindrome (1747447471).

The spelling of 1323044240 in words is "one billion, three hundred twenty-three million, forty-four thousand, two hundred forty".