323968440 has 64 divisors (see below), whose sum is σ = 973560960. Its totient is φ = 86244480.

The previous prime is 323968433. The next prime is 323968441. The reversal of 323968440 is 44869323.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323968441) 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, 80967 + ... + 84873.

It is an arithmetic number, because the mean of its divisors is an integer number (15211890).

Almost surely, 2^323968440 is an apocalyptic number.

323968440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

323968440 is an abundant number, since it is smaller than the sum of its proper divisors (649592520).

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

323968440 is a wasteful number, since it uses less digits than its factorization.

323968440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4612 (or 4608 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 323968440 is about 17999.1233119838. The cubic root of 323968440 is about 686.8062440786.

The spelling of 323968440 in words is "three hundred twenty-three million, nine hundred sixty-eight thousand, four hundred forty".