1440328 has 32 divisors (see below), whose sum is σ = 2851200. Its totient is φ = 681408.

The previous prime is 1440317. The next prime is 1440349. The reversal of 1440328 is 8230441.

It is a junction number, because it is equal to n+sod(n) for n = 1440299 and 1440308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18193 + ... + 18271.

It is an arithmetic number, because the mean of its divisors is an integer number (89100).

2^1440328 is an apocalyptic number.

1440328 is the 642-nd centered heptagonal number.

It is an amenable number.

1440328 is a deficient number, since it is larger than the sum of its proper divisors (1410872).

1440328 is a wasteful number, since it uses less digits than its factorization.

1440328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1440328 is about 1200.1366588851. The cubic root of 1440328 is about 112.9328966986.

Adding to 1440328 its reverse (8230441), we get a palindrome (9670769).

The spelling of 1440328 in words is "one million, four hundred forty thousand, three hundred twenty-eight".