2005450320 has 80 divisors (see below), whose sum is σ = 6384948480. Its totient is φ = 520330752.

The previous prime is 2005450319. The next prime is 2005450331. The reversal of 2005450320 is 230545002.

2005450320 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104040 + ... + 121799.

It is an arithmetic number, because the mean of its divisors is an integer number (79811856).

Almost surely, 2^2005450320 is an apocalyptic number.

2005450320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2005450320 is an abundant number, since it is smaller than the sum of its proper divisors (4379498160).

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

2005450320 is a wasteful number, since it uses less digits than its factorization.

2005450320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225892 (or 225886 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 2005450320 is about 44782.2545211828. The cubic root of 2005450320 is about 1261.0645073044.

Adding to 2005450320 its reverse (230545002), we get a palindrome (2235995322).

The spelling of 2005450320 in words is "two billion, five million, four hundred fifty thousand, three hundred twenty".