1028307021459 has 32 divisors (see below), whose sum is σ = 1464001136640. Its totient is φ = 640518375552.

The previous prime is 1028307021437. The next prime is 1028307021517. The reversal of 1028307021459 is 9541207038201.

It is not a de Polignac number, because 1028307021459 - 2⁷ = 1028307021331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1028307021459.

It is not an unprimeable number, because it can be changed into a prime (1028307021359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1339209 + ... + 1962165.

It is an arithmetic number, because the mean of its divisors is an integer number (45750035520).

Almost surely, 2^{1028307021459} is an apocalyptic number.

1028307021459 is a deficient number, since it is larger than the sum of its proper divisors (435694115181).

1028307021459 is a wasteful number, since it uses less digits than its factorization.

1028307021459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623539.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 1028307021459 in words is "one trillion, twenty-eight billion, three hundred seven million, twenty-one thousand, four hundred fifty-nine".