1304364540 has 24 divisors (see below), whose sum is σ = 3652220880. Its totient is φ = 347830528.

The previous prime is 1304364527. The next prime is 1304364547. The reversal of 1304364540 is 454634031.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1304364498 and 1304364507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304364547) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10869645 + ... + 10869764.

It is an arithmetic number, because the mean of its divisors is an integer number (152175870).

Almost surely, 2^1304364540 is an apocalyptic number.

1304364540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304364540 is an abundant number, since it is smaller than the sum of its proper divisors (2347856340).

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

1304364540 is a wasteful number, since it uses less digits than its factorization.

1304364540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21739421 (or 21739419 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 1304364540 is about 36115.9873186377. The cubic root of 1304364540 is about 1092.6129104974.

Adding to 1304364540 its reverse (454634031), we get a palindrome (1758998571).

The spelling of 1304364540 in words is "one billion, three hundred four million, three hundred sixty-four thousand, five hundred forty".