320433450 has 48 divisors (see below), whose sum is σ = 814072896. Its totient is φ = 83363200.

The previous prime is 320433419. The next prime is 320433457. The reversal of 320433450 is 54334023.

It is a self number, because there is not a number n which added to its sum of digits gives 320433450.

It is not an unprimeable number, because it can be changed into a prime (320433457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19902 + ... + 32201.

It is an arithmetic number, because the mean of its divisors is an integer number (16959852).

Almost surely, 2^320433450 is an apocalyptic number.

320433450 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

320433450 is an abundant number, since it is smaller than the sum of its proper divisors (493639446).

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

320433450 is a wasteful number, since it uses less digits than its factorization.

320433450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52159 (or 52154 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 24.

The square root of 320433450 is about 17900.6550159484. The cubic root of 320433450 is about 684.2990681170.

Adding to 320433450 its reverse (54334023), we get a palindrome (374767473).

The spelling of 320433450 in words is "three hundred twenty million, four hundred thirty-three thousand, four hundred fifty".