2168872 has 8 divisors (see below), whose sum is σ = 4066650. Its totient is φ = 1084432.

The previous prime is 2168867. The next prime is 2168879. The reversal of 2168872 is 2788612.

It can be written as a sum of positive squares in only one way, i.e., 2114116 + 54756 = 1454^2 + 234^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a d-powerful number, because it can be written as 2¹² + 1 + 6⁶ + 8² + 8⁴ + 7⁵ + 2²¹ .

It is not an unprimeable number, because it can be changed into a prime (2168879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135547 + ... + 135562.

2^2168872 is an apocalyptic number.

It is an amenable number.

2168872 is a deficient number, since it is larger than the sum of its proper divisors (1897778).

2168872 is a wasteful number, since it uses less digits than its factorization.

2168872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271115 (or 271111 counting only the distinct ones).

The product of its digits is 10752, while the sum is 34.

The square root of 2168872 is about 1472.7090683499. The cubic root of 2168872 is about 129.4428224599.

The spelling of 2168872 in words is "two million, one hundred sixty-eight thousand, eight hundred seventy-two".