2166750 has 80 divisors (see below), whose sum is σ = 6115824. Its totient is φ = 572400.

The previous prime is 2166721. The next prime is 2166763. The reversal of 2166750 is 576612.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 20197 + ... + 20303.

2^2166750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2166750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3057912).

2166750 is an abundant number, since it is smaller than the sum of its proper divisors (3949074).

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

2166750 is a wasteful number, since it uses less digits than its factorization.

2166750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2166750 is about 1471.9884510417. The cubic root of 2166750 is about 129.4005935504.

It can be divided in two parts, 2166 and 750, that added together give a square (2916 = 54²).

The spelling of 2166750 in words is "two million, one hundred sixty-six thousand, seven hundred fifty".