2166372200 has 48 divisors (see below), whose sum is σ = 5172963180. Its totient is φ = 843125760.

The previous prime is 2166372199. The next prime is 2166372211. The reversal of 2166372200 is 22736612.

It can be written as a sum of positive squares in 6 ways, for example, as 1413308836 + 753063364 = 37594^2 + 27442^2 .

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 11 ways as a sum of consecutive naturals, for example, 138977 + ... + 153776.

Almost surely, 2^2166372200 is an apocalyptic number.

2166372200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2166372200 is an abundant number, since it is smaller than the sum of its proper divisors (3006590980).

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

2166372200 is a wasteful number, since it uses less digits than its factorization.

2166372200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292806 (or 292797 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 2166372200 is about 46544.3036256855. The cubic root of 2166372200 is about 1293.9307224182.

The spelling of 2166372200 in words is "two billion, one hundred sixty-six million, three hundred seventy-two thousand, two hundred".