1307282728 has 32 divisors (see below), whose sum is σ = 2597601960. Its totient is φ = 614656000.

The previous prime is 1307282719. The next prime is 1307282729. The reversal of 1307282728 is 8272827031.

It can be written as a sum of positive squares in 4 ways, for example, as 1303354404 + 3928324 = 36102^2 + 1982^2 .

It is not an unprimeable number, because it can be changed into a prime (1307282729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183228 + ... + 190228.

Almost surely, 2^1307282728 is an apocalyptic number.

It is an amenable number.

1307282728 is a deficient number, since it is larger than the sum of its proper divisors (1290319232).

1307282728 is a wasteful number, since it uses less digits than its factorization.

1307282728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8397 (or 8393 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 1307282728 is about 36156.3649721595. The cubic root of 1307282728 is about 1093.4271192435.

The spelling of 1307282728 in words is "one billion, three hundred seven million, two hundred eighty-two thousand, seven hundred twenty-eight".