1840128 has 44 divisors (see below), whose sum is σ = 4912800. Its totient is φ = 612352.

The previous prime is 1840123. The next prime is 1840171. The reversal of 1840128 is 8210481.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 1840098 and 1840107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1840123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2773 + ... + 3371.

2^1840128 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 1840128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2456400).

1840128 is an abundant number, since it is smaller than the sum of its proper divisors (3072672).

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

1840128 is an equidigital number, since it uses as much as digits as its factorization.

1840128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 1840128 is about 1356.5131772305. The cubic root of 1840128 is about 122.5413549115.

The spelling of 1840128 in words is "one million, eight hundred forty thousand, one hundred twenty-eight".