1866112 has 32 divisors (see below), whose sum is σ = 3794400. Its totient is φ = 913920.

The previous prime is 1866101. The next prime is 1866113. The reversal of 1866112 is 2116681.

It is a tau number, because it is divible by the number of its divisors (32).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1866113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7689 + ... + 7927.

It is an arithmetic number, because the mean of its divisors is an integer number (118575).

2^1866112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1866112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1897200).

1866112 is an abundant number, since it is smaller than the sum of its proper divisors (1928288).

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

1866112 is an equidigital number, since it uses as much as digits as its factorization.

1866112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 302 counting only the distinct ones).

The product of its digits is 576, while the sum is 25.

The square root of 1866112 is about 1366.0570998315. The cubic root of 1866112 is about 123.1154533211.

The spelling of 1866112 in words is "one million, eight hundred sixty-six thousand, one hundred twelve".