1028394567 has 12 divisors (see below), whose sum is σ = 1485824184. Its totient is φ = 685427760.

The previous prime is 1028394557. The next prime is 1028394611. The reversal of 1028394567 is 7654938201.

1028394567 is a `hidden beast` number, since 1 + 0 + 2 + 83 + 9 + 4 + 567 = 666.

1028394567 is digitally balanced in base 2 and base 10, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1028394567 - 2¹⁰ = 1028393543 is a prime.

1028394567 is strictly pandigital in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028394557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32793 + ... + 55965.

It is an arithmetic number, because the mean of its divisors is an integer number (123818682).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1028394567 = 2056789134, but 3⋅1028394567 = 3085183701 is not.

Almost surely, 2^1028394567 is an apocalyptic number.

1028394567 is a deficient number, since it is larger than the sum of its proper divisors (457429617).

1028394567 is a wasteful number, since it uses less digits than its factorization.

1028394567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28110 (or 28107 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 1028394567 is about 32068.5915967633. The cubic root of 1028394567 is about 1009.3766591262.

The spelling of 1028394567 in words is "one billion, twenty-eight million, three hundred ninety-four thousand, five hundred sixty-seven".