2171016 has 96 divisors (see below), whose sum is σ = 6636000. Its totient is φ = 655776.

The previous prime is 2171011. The next prime is 2171017. The reversal of 2171016 is 6101712.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 2171016.

It is not an unprimeable number, because it can be changed into a prime (2171011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94381 + ... + 94403.

It is an arithmetic number, because the mean of its divisors is an integer number (69125).

2^2171016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2171016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3318000).

2171016 is an abundant number, since it is smaller than the sum of its proper divisors (4464984).

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

2171016 is a wasteful number, since it uses less digits than its factorization.

2171016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 2171016 is about 1473.4367987803. The cubic root of 2171016 is about 129.4854612162.

Adding to 2171016 its reverse (6101712), we get a palindrome (8272728).

The spelling of 2171016 in words is "two million, one hundred seventy-one thousand, sixteen".