323630240 has 48 divisors (see below), whose sum is σ = 797827968. Its totient is φ = 123822336.

The previous prime is 323630233. The next prime is 323630257. The reversal of 323630240 is 42036323.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40292 + ... + 47651.

It is an arithmetic number, because the mean of its divisors is an integer number (16621416).

Almost surely, 2^323630240 is an apocalyptic number.

It is an amenable number.

323630240 is an abundant number, since it is smaller than the sum of its proper divisors (474197728).

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

323630240 is a wasteful number, since it uses less digits than its factorization.

323630240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87981 (or 87973 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 323630240 is about 17989.7259567788. The cubic root of 323630240 is about 686.5671685832.

Adding to 323630240 its reverse (42036323), we get a palindrome (365666563).

The spelling of 323630240 in words is "three hundred twenty-three million, six hundred thirty thousand, two hundred forty".