1304323040 has 48 divisors (see below), whose sum is σ = 3084969888. Its totient is φ = 521135616.

The previous prime is 1304323021. The next prime is 1304323067. The reversal of 1304323040 is 403234031.

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 7 ways as a sum of consecutive naturals, for example, 153134 + ... + 161426.

It is an arithmetic number, because the mean of its divisors is an integer number (64270206).

Almost surely, 2^1304323040 is an apocalyptic number.

1304323040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304323040 is an abundant number, since it is smaller than the sum of its proper divisors (1780646848).

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

1304323040 is an equidigital number, since it uses as much as digits as its factorization.

1304323040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9291 (or 9283 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 1304323040 is about 36115.4127762649. The cubic root of 1304323040 is about 1092.6013227560.

Adding to 1304323040 its reverse (403234031), we get a palindrome (1707557071).

The spelling of 1304323040 in words is "one billion, three hundred four million, three hundred twenty-three thousand, forty".