2045304520 has 128 divisors (see below), whose sum is σ = 5358182400. Its totient is φ = 688214016.

The previous prime is 2045304517. The next prime is 2045304529. The reversal of 2045304520 is 254035402.

It is not an unprimeable number, because it can be changed into a prime (2045304529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4018026 + ... + 4018534.

It is an arithmetic number, because the mean of its divisors is an integer number (41860800).

Almost surely, 2^2045304520 is an apocalyptic number.

2045304520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2045304520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2679091200).

2045304520 is an abundant number, since it is smaller than the sum of its proper divisors (3312877880).

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

2045304520 is a wasteful number, since it uses less digits than its factorization.

2045304520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767 (or 763 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 2045304520 is about 45225.0430624449. The cubic root of 2045304520 is about 1269.3634605395.

Adding to 2045304520 its reverse (254035402), we get a palindrome (2299339922).

The spelling of 2045304520 in words is "two billion, forty-five million, three hundred four thousand, five hundred twenty".