320320454 has 16 divisors (see below), whose sum is σ = 492836400. Its totient is φ = 156051840.

The previous prime is 320320387. The next prime is 320320513. The reversal of 320320454 is 454023023.

It is a super-2 number, since 2×320320454² = 205210386501532232, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76097 + ... + 80195.

It is an arithmetic number, because the mean of its divisors is an integer number (30802275).

Almost surely, 2^320320454 is an apocalyptic number.

320320454 is a deficient number, since it is larger than the sum of its proper divisors (172515946).

320320454 is a wasteful number, since it uses less digits than its factorization.

320320454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5095.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 320320454 is about 17897.4985402989. The cubic root of 320320454 is about 684.2186227617.

Adding to 320320454 its reverse (454023023), we get a palindrome (774343477).

The spelling of 320320454 in words is "three hundred twenty million, three hundred twenty thousand, four hundred fifty-four".