1304204520 has 64 divisors (see below), whose sum is σ = 3917160000. Its totient is φ = 347383808.

The previous prime is 1304204483. The next prime is 1304204569. The reversal of 1304204520 is 254024031.

1304204520 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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, 105631 + ... + 117329.

It is an arithmetic number, because the mean of its divisors is an integer number (61205625).

Almost surely, 2^1304204520 is an apocalyptic number.

1304204520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304204520 is an abundant number, since it is smaller than the sum of its proper divisors (2612955480).

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

1304204520 is a wasteful number, since it uses less digits than its factorization.

1304204520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12642 (or 12638 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1304204520 is about 36113.7718882977. The cubic root of 1304204520 is about 1092.5682279303.

Adding to 1304204520 its reverse (254024031), we get a palindrome (1558228551).

It can be divided in two parts, 130420 and 4520, that added together give a triangular number (134940 = T₅₁₉).

The spelling of 1304204520 in words is "one billion, three hundred four million, two hundred four thousand, five hundred twenty".