1806872 has 8 divisors (see below), whose sum is σ = 3387900. Its totient is φ = 903432.

The previous prime is 1806869. The next prime is 1806877. The reversal of 1806872 is 2786081.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1806877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112922 + ... + 112937.

2^1806872 is an apocalyptic number.

It is an amenable number.

1806872 is a deficient number, since it is larger than the sum of its proper divisors (1581028).

1806872 is a wasteful number, since it uses less digits than its factorization.

1806872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225865 (or 225861 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 1806872 is about 1344.1993899716. The cubic root of 1806872 is about 121.7986466308.

The spelling of 1806872 in words is "one million, eight hundred six thousand, eight hundred seventy-two".