1878128 has 40 divisors (see below), whose sum is σ = 4270560. Its totient is φ = 783360.

The previous prime is 1878119. The next prime is 1878139. The reversal of 1878128 is 8218781.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 4388 + ... + 4796.

It is an arithmetic number, because the mean of its divisors is an integer number (106764).

2^1878128 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 1878128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2135280).

1878128 is an abundant number, since it is smaller than the sum of its proper divisors (2392432).

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

1878128 is a wasteful number, since it uses less digits than its factorization.

1878128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 459 counting only the distinct ones).

The product of its digits is 7168, while the sum is 35.

The square root of 1878128 is about 1370.4481018995. The cubic root of 1878128 is about 123.3791372765.

The spelling of 1878128 in words is "one million, eight hundred seventy-eight thousand, one hundred twenty-eight".