1316728480 has 24 divisors (see below), whose sum is σ = 3110771412. Its totient is φ = 526691328.

The previous prime is 1316728459. The next prime is 1316728487. The reversal of 1316728480 is 848276131.

It can be written as a sum of positive squares in 2 ways, for example, as 1235944336 + 80784144 = 35156^2 + 8988^2 .

It is a super-2 number, since 2×1316728480² = 3467547780086220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (1316728487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4114617 + ... + 4114936.

Almost surely, 2^1316728480 is an apocalyptic number.

1316728480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1316728480 is an abundant number, since it is smaller than the sum of its proper divisors (1794042932).

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

1316728480 is an equidigital number, since it uses as much as digits as its factorization.

1316728480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8229568 (or 8229560 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1316728480 is about 36286.7535059283. The cubic root of 1316728480 is about 1096.0543155990.

The spelling of 1316728480 in words is "one billion, three hundred sixteen million, seven hundred twenty-eight thousand, four hundred eighty".