2126872 has 16 divisors (see below), whose sum is σ = 4350600. Its totient is φ = 966720.

The previous prime is 2126867. The next prime is 2126893. The reversal of 2126872 is 2786212.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁴ + 1 + 2¹⁰ + 6⁵ + 8⁴ + 7⁵ + 2²¹ .

It is a self number, because there is not a number n which added to its sum of digits gives 2126872.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11997 + ... + 12172.

2^2126872 is an apocalyptic number.

2126872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2126872 is an abundant number, since it is smaller than the sum of its proper divisors (2223728).

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

2126872 is a wasteful number, since it uses less digits than its factorization.

2126872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24186 (or 24182 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 2126872 is about 1458.3799230653. The cubic root of 2126872 is about 128.6018209163.

The spelling of 2126872 in words is "two million, one hundred twenty-six thousand, eight hundred seventy-two".