1304041040 has 80 divisors (see below), whose sum is σ = 3147227136. Its totient is φ = 501964800.

The previous prime is 1304041021. The next prime is 1304041073. The reversal of 1304041040 is 401404031.

It is a tau number, because it is divible by the number of its divisors (80).

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, 472304 + ... + 475056.

Almost surely, 2^1304041040 is an apocalyptic number.

1304041040 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 1304041040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1573613568).

1304041040 is an abundant number, since it is smaller than the sum of its proper divisors (1843186096).

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

1304041040 is a wasteful number, since it uses less digits than its factorization.

1304041040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988 (or 2982 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1304041040 is about 36111.5084149084. The cubic root of 1304041040 is about 1092.5225754490.

Adding to 1304041040 its reverse (401404031), we get a palindrome (1705445071).

The spelling of 1304041040 in words is "one billion, three hundred four million, forty-one thousand, forty".