2004521920 has 56 divisors (see below), whose sum is σ = 4778654400. Its totient is φ = 800904192.

The previous prime is 2004521903. The next prime is 2004521947. The reversal of 2004521920 is 291254002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329466 + ... + 335494.

Almost surely, 2^2004521920 is an apocalyptic number.

2004521920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2004521920 is an abundant number, since it is smaller than the sum of its proper divisors (2774132480).

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

2004521920 is a wasteful number, since it uses less digits than its factorization.

2004521920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7085 (or 7075 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2004521920 is about 44771.8876081856. The cubic root of 2004521920 is about 1260.8698788646.

Adding to 2004521920 its reverse (291254002), we get a palindrome (2295775922).

The spelling of 2004521920 in words is "two billion, four million, five hundred twenty-one thousand, nine hundred twenty".