1868928 has 64 divisors (see below), whose sum is σ = 5157120. Its totient is φ = 599040.

The previous prime is 1868917. The next prime is 1868947. The reversal of 1868928 is 8298681.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 1868928.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11826 + ... + 11982.

It is an arithmetic number, because the mean of its divisors is an integer number (80580).

2^1868928 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 1868928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2578560).

1868928 is an abundant number, since it is smaller than the sum of its proper divisors (3288192).

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

1868928 is a wasteful number, since it uses less digits than its factorization.

1868928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 193 counting only the distinct ones).

The product of its digits is 55296, while the sum is 42.

The square root of 1868928 is about 1367.0874149081. The cubic root of 1868928 is about 123.1773500836.

The spelling of 1868928 in words is "one million, eight hundred sixty-eight thousand, nine hundred twenty-eight".