1304230520 has 16 divisors (see below), whose sum is σ = 2934518760. Its totient is φ = 521692192.

The previous prime is 1304230511. The next prime is 1304230573. The reversal of 1304230520 is 250324031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1304230492 and 1304230501.

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, 16302842 + ... + 16302921.

Almost surely, 2^1304230520 is an apocalyptic number.

1304230520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304230520 is an abundant number, since it is smaller than the sum of its proper divisors (1630288240).

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

1304230520 is a wasteful number, since it uses less digits than its factorization.

1304230520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32605774 (or 32605770 counting only the distinct ones).

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

The square root of 1304230520 is about 36114.1318599797. The cubic root of 1304230520 is about 1092.5754881886.

Adding to 1304230520 its reverse (250324031), we get a palindrome (1554554551).

The spelling of 1304230520 in words is "one billion, three hundred four million, two hundred thirty thousand, five hundred twenty".