1308081028 has 12 divisors (see below), whose sum is σ = 2291302720. Its totient is φ = 653423112.

The previous prime is 1308081023. The next prime is 1308081037. The reversal of 1308081028 is 8201808031.

It is a super-2 number, since 2×1308081028² = 3422151951627073568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1308081023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149568 + ... + 158071.

Almost surely, 2^1308081028 is an apocalyptic number.

It is an amenable number.

1308081028 is a deficient number, since it is larger than the sum of its proper divisors (983221692).

1308081028 is a wasteful number, since it uses less digits than its factorization.

1308081028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308706 (or 308704 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 1308081028 is about 36167.4028373617. The cubic root of 1308081028 is about 1093.6496432198.

Adding to 1308081028 its reverse (8201808031), we get a palindrome (9509889059).

The spelling of 1308081028 in words is "one billion, three hundred eight million, eighty-one thousand, twenty-eight".