1888866 has 64 divisors (see below), whose sum is σ = 5068800. Its totient is φ = 509328.

The previous prime is 1888849. The next prime is 1888879. The reversal of 1888866 is 6688881.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7051 + ... + 7313.

It is an arithmetic number, because the mean of its divisors is an integer number (79200).

2^1888866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1888866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2534400).

1888866 is an abundant number, since it is smaller than the sum of its proper divisors (3179934).

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

1888866 is a wasteful number, since it uses less digits than its factorization.

1888866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 294 counting only the distinct ones).

The product of its digits is 147456, while the sum is 45.

The square root of 1888866 is about 1374.3602147909. The cubic root of 1888866 is about 123.6138263353.

The spelling of 1888866 in words is "one million, eight hundred eighty-eight thousand, eight hundred sixty-six".