1028845864 has 16 divisors (see below), whose sum is σ = 1973949120. Its totient is φ = 502459440.

The previous prime is 1028845861. The next prime is 1028845879. The reversal of 1028845864 is 4685488201.

1028845864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1028845861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1495072 + ... + 1495759.

It is an arithmetic number, because the mean of its divisors is an integer number (123371820).

Almost surely, 2^1028845864 is an apocalyptic number.

It is an amenable number.

1028845864 is a deficient number, since it is larger than the sum of its proper divisors (945103256).

1028845864 is a wasteful number, since it uses less digits than its factorization.

1028845864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990880 (or 2990876 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 46.

The square root of 1028845864 is about 32075.6272580912. The cubic root of 1028845864 is about 1009.5242879498.

The spelling of 1028845864 in words is "one billion, twenty-eight million, eight hundred forty-five thousand, eight hundred sixty-four".