1004431340 has 48 divisors (see below), whose sum is σ = 2340092160. Its totient is φ = 359052480.

The previous prime is 1004431319. The next prime is 1004431343. The reversal of 1004431340 is 431344001.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1004431343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25712 + ... + 51671.

It is an arithmetic number, because the mean of its divisors is an integer number (48751920).

Almost surely, 2^1004431340 is an apocalyptic number.

1004431340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1004431340 is an abundant number, since it is smaller than the sum of its proper divisors (1335660820).

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

1004431340 is a wasteful number, since it uses less digits than its factorization.

1004431340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77462 (or 77460 counting only the distinct ones).

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

The square root of 1004431340 is about 31692.7647894594. The cubic root of 1004431340 is about 1001.4749368252.

Adding to 1004431340 its reverse (431344001), we get a palindrome (1435775341).

The spelling of 1004431340 in words is "one billion, four million, four hundred thirty-one thousand, three hundred forty".