1004335040 has 28 divisors (see below), whose sum is σ = 2391573576. Its totient is φ = 401733888.

The previous prime is 1004335037. The next prime is 1004335051. The reversal of 1004335040 is 405334001.

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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1568954 + ... + 1569593.

It is an arithmetic number, because the mean of its divisors is an integer number (85413342).

Almost surely, 2^1004335040 is an apocalyptic number.

1004335040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1004335040 is an abundant number, since it is smaller than the sum of its proper divisors (1387238536).

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

1004335040 is an equidigital number, since it uses as much as digits as its factorization.

1004335040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3138564 (or 3138554 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 1004335040 is about 31691.2454788385. The cubic root of 1004335040 is about 1001.4429302841.

Adding to 1004335040 its reverse (405334001), we get a palindrome (1409669041).

The spelling of 1004335040 in words is "one billion, four million, three hundred thirty-five thousand, forty".