1440324 has 18 divisors (see below), whose sum is σ = 3640910. Its totient is φ = 480096.

The previous prime is 1440317. The next prime is 1440349. The reversal of 1440324 is 4230441.

It can be written as a sum of positive squares in only one way, i.e., 1440000 + 324 = 1200^2 + 18^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

1440324 is a modest number, since divided by 324 gives 144 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1440297 and 1440306.

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 5 ways as a sum of consecutive naturals, for example, 19969 + ... + 20040.

2^1440324 is an apocalyptic number.

It is an amenable number.

1440324 is an abundant number, since it is smaller than the sum of its proper divisors (2200586).

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

1440324 is a wasteful number, since it uses less digits than its factorization.

1440324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40019 (or 40014 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1440324 is about 1200.1349924071. The cubic root of 1440324 is about 112.9327921549.

Adding to 1440324 its reverse (4230441), we get a palindrome (5670765).

It can be divided in two parts, 1440 and 324, that added together give a square (1764 = 42²).

The spelling of 1440324 in words is "one million, four hundred forty thousand, three hundred twenty-four".