1004313440 has 96 divisors (see below), whose sum is σ = 2570895936. Its totient is φ = 368547840.

The previous prime is 1004313407. The next prime is 1004313467. The reversal of 1004313440 is 443134001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358445 + ... + 361235.

It is an arithmetic number, because the mean of its divisors is an integer number (26780166).

Almost surely, 2^1004313440 is an apocalyptic number.

1004313440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1004313440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1285447968).

1004313440 is an abundant number, since it is smaller than the sum of its proper divisors (1566582496).

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

1004313440 is a wasteful number, since it uses less digits than its factorization.

1004313440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2992 (or 2984 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1004313440 is about 31690.9046888851. The cubic root of 1004313440 is about 1001.4357509660.

Adding to 1004313440 its reverse (443134001), we get a palindrome (1447447441).

The spelling of 1004313440 in words is "one billion, four million, three hundred thirteen thousand, four hundred forty".