2128716 has 36 divisors (see below), whose sum is σ = 5569200. Its totient is φ = 684768.

The previous prime is 2128697. The next prime is 2128727. The reversal of 2128716 is 6178212.

It is a tau number, because it is divible by the number of its divisors (36).

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 2128716.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25 + ... + 2063.

It is an arithmetic number, because the mean of its divisors is an integer number (154700).

2^2128716 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 2128716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2784600).

2128716 is an abundant number, since it is smaller than the sum of its proper divisors (3440484).

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

2128716 is a wasteful number, since it uses less digits than its factorization.

2128716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2078 (or 2073 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 2128716 is about 1459.0119944675. The cubic root of 2128716 is about 128.6389761465.

The spelling of 2128716 in words is "two million, one hundred twenty-eight thousand, seven hundred sixteen".