2000649220 has 24 divisors (see below), whose sum is σ = 4239912600. Its totient is φ = 792916992.

The previous prime is 2000649197. The next prime is 2000649229. The reversal of 2000649220 is 229460002.

It can be written as a sum of positive squares in 4 ways, for example, as 106832896 + 1893816324 = 10336^2 + 43518^2 .

It is not an unprimeable number, because it can be changed into a prime (2000649229) 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, 456685 + ... + 461044.

It is an arithmetic number, because the mean of its divisors is an integer number (176663025).

Almost surely, 2^2000649220 is an apocalyptic number.

2000649220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2000649220 is an abundant number, since it is smaller than the sum of its proper divisors (2239263380).

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

2000649220 is a wasteful number, since it uses less digits than its factorization.

2000649220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917847 (or 917845 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 2000649220 is about 44728.6174613077. The cubic root of 2000649220 is about 1260.0573628038.

The spelling of 2000649220 in words is "two billion, six hundred forty-nine thousand, two hundred twenty".