1303864720 has 20 divisors (see below), whose sum is σ = 3031485660. Its totient is φ = 521545856.

The previous prime is 1303864711. The next prime is 1303864769. The reversal of 1303864720 is 274683031.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 926106624 + 377758096 = 30432^2 + 19436^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8149075 + ... + 8149234.

It is an arithmetic number, because the mean of its divisors is an integer number (151574283).

Almost surely, 2^1303864720 is an apocalyptic number.

1303864720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1303864720 is an abundant number, since it is smaller than the sum of its proper divisors (1727620940).

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

1303864720 is a wasteful number, since it uses less digits than its factorization.

1303864720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16298322 (or 16298316 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 1303864720 is about 36109.0670053935. The cubic root of 1303864720 is about 1092.4733330664.

The spelling of 1303864720 in words is "one billion, three hundred three million, eight hundred sixty-four thousand, seven hundred twenty".