1028277648 has 30 divisors (see below), whose sum is σ = 2877749654. Its totient is φ = 342759168.

The previous prime is 1028277647. The next prime is 1028277707. The reversal of 1028277648 is 8467728201.

It can be written as a sum of positive squares in only one way, i.e., 961496064 + 66781584 = 31008^2 + 8172^2 .

It is not an unprimeable number, because it can be changed into a prime (1028277643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3570265 + ... + 3570552.

Almost surely, 2^1028277648 is an apocalyptic number.

1028277648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1028277648 is an abundant number, since it is smaller than the sum of its proper divisors (1849472006).

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

1028277648 is a wasteful number, since it uses less digits than its factorization.

1028277648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7140831 (or 7140822 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 1028277648 is about 32066.7685930466. The cubic root of 1028277648 is about 1009.3384053969.

The spelling of 1028277648 in words is "one billion, twenty-eight million, two hundred seventy-seven thousand, six hundred forty-eight".