450405320 has 32 divisors (see below), whose sum is σ = 1057475520. Its totient is φ = 172328640.

The previous prime is 450405253. The next prime is 450405323. The reversal of 450405320 is 23504054.

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

It is not an unprimeable number, because it can be changed into a prime (450405323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243866 + ... + 245705.

It is an arithmetic number, because the mean of its divisors is an integer number (33046110).

Almost surely, 2^450405320 is an apocalyptic number.

450405320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

450405320 is an abundant number, since it is smaller than the sum of its proper divisors (607070200).

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

450405320 is a wasteful number, since it uses less digits than its factorization.

450405320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489605 (or 489601 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 450405320 is about 21222.7547693507. The cubic root of 450405320 is about 766.5394378247.

Adding to 450405320 its reverse (23504054), we get a palindrome (473909374).

The spelling of 450405320 in words is "four hundred fifty million, four hundred five thousand, three hundred twenty".