2220645200 has 60 divisors (see below), whose sum is σ = 5339650428. Its totient is φ = 887500800.

The previous prime is 2220645199. The next prime is 2220645211. The reversal of 2220645200 is 25460222.

It can be written as a sum of positive squares in 6 ways, for example, as 83247376 + 2137397824 = 9124^2 + 46232^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 855104 + ... + 857696.

Almost surely, 2^2220645200 is an apocalyptic number.

2220645200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220645200 is an abundant number, since it is smaller than the sum of its proper divisors (3119005228).

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

2220645200 is a wasteful number, since it uses less digits than its factorization.

2220645200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4752 (or 4741 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 2220645200 is about 47123.7222638450. The cubic root of 2220645200 is about 1304.6471156754.

The spelling of 2220645200 in words is "two billion, two hundred twenty million, six hundred forty-five thousand, two hundred".