2187629220 has 96 divisors (see below), whose sum is σ = 7368883200. Its totient is φ = 473710464.

The previous prime is 2187629189. The next prime is 2187629243. The reversal of 2187629220 is 229267812.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129090 + ... + 145049.

It is an arithmetic number, because the mean of its divisors is an integer number (76759200).

Almost surely, 2^2187629220 is an apocalyptic number.

2187629220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2187629220 is an abundant number, since it is smaller than the sum of its proper divisors (5181253980).

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

2187629220 is a wasteful number, since it uses less digits than its factorization.

2187629220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274177 (or 274175 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 2187629220 is about 46772.0987341813. The cubic root of 2187629220 is about 1298.1490858771.

The spelling of 2187629220 in words is "two billion, one hundred eighty-seven million, six hundred twenty-nine thousand, two hundred twenty".