2116872 has 24 divisors (see below), whose sum is σ = 5733390. Its totient is φ = 705600.

The previous prime is 2116867. The next prime is 2116901. The reversal of 2116872 is 2786112.

It can be written as a sum of positive squares in only one way, i.e., 2056356 + 60516 = 1434^2 + 246^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×2116872² = 8962294128768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14629 + ... + 14772.

2^2116872 is an apocalyptic number.

It is an amenable number.

2116872 is an abundant number, since it is smaller than the sum of its proper divisors (3616518).

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

2116872 is a wasteful number, since it uses less digits than its factorization.

2116872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29413 (or 29406 counting only the distinct ones).

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

The square root of 2116872 is about 1454.9474217304. The cubic root of 2116872 is about 128.3999534166.

The spelling of 2116872 in words is "two million, one hundred sixteen thousand, eight hundred seventy-two".