2171070 has 128 divisors (see below), whose sum is σ = 6842880. Its totient is φ = 483840.

The previous prime is 2171021. The next prime is 2171077. The reversal of 2171070 is 701712.

2171070 = T₄₉ + T₅₀ + ... + T₂₃₅.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171077) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 50469 + ... + 50511.

It is an arithmetic number, because the mean of its divisors is an integer number (53460).

2^2171070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2171070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3421440).

2171070 is an abundant number, since it is smaller than the sum of its proper divisors (4671810).

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

2171070 is a wasteful number, since it uses less digits than its factorization.

2171070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 98, while the sum is 18.

The square root of 2171070 is about 1473.4551231714. The cubic root of 2171070 is about 129.4865347776.

Adding to 2171070 its reverse (701712), we get a palindrome (2872782).

The spelling of 2171070 in words is "two million, one hundred seventy-one thousand, seventy".