2028170660 has 48 divisors (see below), whose sum is σ = 4404675072. Its totient is φ = 783648000.

The previous prime is 2028170623. The next prime is 2028170687. The reversal of 2028170660 is 660718202.

It is a super-2 number, since 2×2028170660² = 8226952452169671200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369899 + ... + 375341.

It is an arithmetic number, because the mean of its divisors is an integer number (91764064).

Almost surely, 2^2028170660 is an apocalyptic number.

2028170660 is a gapful number since it is divisible by the number (20) 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 2028170660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2202337536).

2028170660 is an abundant number, since it is smaller than the sum of its proper divisors (2376504412).

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

2028170660 is a wasteful number, since it uses less digits than its factorization.

2028170660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6084 (or 6082 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 2028170660 is about 45035.2157761013. The cubic root of 2028170660 is about 1265.8089593577.

Adding to 2028170660 its reverse (660718202), we get a palindrome (2688888862).

The spelling of 2028170660 in words is "two billion, twenty-eight million, one hundred seventy thousand, six hundred sixty".