2166302208 has 160 divisors (see below), whose sum is σ = 6657716736. Its totient is φ = 613122048.

The previous prime is 2166302191. The next prime is 2166302249. The reversal of 2166302208 is 8022036612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1214085 + ... + 1215867.

Almost surely, 2^2166302208 is an apocalyptic number.

2166302208 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2166302208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3328858368).

2166302208 is an abundant number, since it is smaller than the sum of its proper divisors (4491414528).

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

2166302208 is a wasteful number, since it uses less digits than its factorization.

2166302208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924 (or 1908 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 2166302208 is about 46543.5517338331. The cubic root of 2166302208 is about 1293.9167873282.

The spelling of 2166302208 in words is "two billion, one hundred sixty-six million, three hundred two thousand, two hundred eight".