1323753280 has 112 divisors (see below), whose sum is σ = 3415832640. Its totient is φ = 486678528.

The previous prime is 1323753257. The next prime is 1323753391. The reversal of 1323753280 is 823573231.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

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, 231091 + ... + 236749.

Almost surely, 2^1323753280 is an apocalyptic number.

1323753280 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 1323753280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1707916320).

1323753280 is an abundant number, since it is smaller than the sum of its proper divisors (2092079360).

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

1323753280 is a wasteful number, since it uses less digits than its factorization.

1323753280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5736 (or 5726 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 1323753280 is about 36383.4203999569. The cubic root of 1323753280 is about 1098.0000243308. Note that the first 4 decimals are identical.

The spelling of 1323753280 in words is "one billion, three hundred twenty-three million, seven hundred fifty-three thousand, two hundred eighty".