1000440324 has 72 divisors (see below), whose sum is σ = 2727338432. Its totient is φ = 307385280.

The previous prime is 1000440313. The next prime is 1000440359. The reversal of 1000440324 is 4230440001.

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

It is a junction number, because it is equal to n+sod(n) for n = 1000440297 and 1000440306.

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 23 ways as a sum of consecutive naturals, for example, 496479 + ... + 498489.

Almost surely, 2^1000440324 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 1000440324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1363669216).

1000440324 is an abundant number, since it is smaller than the sum of its proper divisors (1726898108).

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

1000440324 is a wasteful number, since it uses less digits than its factorization.

1000440324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3097 (or 3092 counting only the distinct ones).

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

The square root of 1000440324 is about 31629.7379691960. The cubic root of 1000440324 is about 1000.1467531291.

Adding to 1000440324 its reverse (4230440001), we get a palindrome (5230880325).

The spelling of 1000440324 in words is "one billion, four hundred forty thousand, three hundred twenty-four".