1304327820 has 48 divisors (see below), whose sum is σ = 3653733888. Its totient is φ = 347666880.

The previous prime is 1304327797. The next prime is 1304327851. The reversal of 1304327820 is 287234031.

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

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, 214867 + ... + 220853.

It is an arithmetic number, because the mean of its divisors is an integer number (76119456).

Almost surely, 2^1304327820 is an apocalyptic number.

1304327820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304327820 is an abundant number, since it is smaller than the sum of its proper divisors (2349406068).

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

1304327820 is a wasteful number, since it uses less digits than its factorization.

1304327820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9630 (or 9628 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 1304327820 is about 36115.4789529365. The cubic root of 1304327820 is about 1092.6026574530.

The spelling of 1304327820 in words is "one billion, three hundred four million, three hundred twenty-seven thousand, eight hundred twenty".