1004231540 has 48 divisors (see below), whose sum is σ = 2286238080. Its totient is φ = 368323200.

The previous prime is 1004231539. The next prime is 1004231561. The reversal of 1004231540 is 451324001.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26471 + ... + 52049.

It is an arithmetic number, because the mean of its divisors is an integer number (47629960).

Almost surely, 2^1004231540 is an apocalyptic number.

1004231540 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 1004231540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1143119040).

1004231540 is an abundant number, since it is smaller than the sum of its proper divisors (1282006540).

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

1004231540 is a wasteful number, since it uses less digits than its factorization.

1004231540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25752 (or 25750 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1004231540 is about 31689.6124936863. The cubic root of 1004231540 is about 1001.4085284495.

Adding to 1004231540 its reverse (451324001), we get a palindrome (1455555541).

The spelling of 1004231540 in words is "one billion, four million, two hundred thirty-one thousand, five hundred forty".