1304002320 has 40 divisors (see below), whose sum is σ = 4042407936. Its totient is φ = 347733888.

The previous prime is 1304002309. The next prime is 1304002363. The reversal of 1304002320 is 232004031.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1304002320.

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, 2716432 + ... + 2716911.

Almost surely, 2^1304002320 is an apocalyptic number.

1304002320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304002320 is an abundant number, since it is smaller than the sum of its proper divisors (2738405616).

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

1304002320 is a wasteful number, since it uses less digits than its factorization.

1304002320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5433359 (or 5433353 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1304002320 is about 36110.9722937503. The cubic root of 1304002320 is about 1092.5117621664.

Adding to 1304002320 its reverse (232004031), we get a palindrome (1536006351).

The spelling of 1304002320 in words is "one billion, three hundred four million, two thousand, three hundred twenty".