1304676720 has 160 divisors (see below), whose sum is σ = 4549976640. Its totient is φ = 347867136.

The previous prime is 1304676689. The next prime is 1304676731. The reversal of 1304676720 is 276764031.

1304676720 is a `hidden beast` number, since 130 + 467 + 67 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171232 + ... + 178688.

It is an arithmetic number, because the mean of its divisors is an integer number (28437354).

Almost surely, 2^1304676720 is an apocalyptic number.

1304676720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1304676720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2274988320).

1304676720 is an abundant number, since it is smaller than the sum of its proper divisors (3245299920).

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

1304676720 is an frugal number, since it uses more digits than its factorization.

1304676720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7491 (or 7467 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 1304676720 is about 36120.3089687782. The cubic root of 1304676720 is about 1092.7000703569.

The spelling of 1304676720 in words is "one billion, three hundred four million, six hundred seventy-six thousand, seven hundred twenty".