1028508085 has 16 divisors (see below), whose sum is σ = 1350680832. Its totient is φ = 745633600.

The previous prime is 1028508071. The next prime is 1028508101. The reversal of 1028508085 is 5808058201.

It is not a de Polignac number, because 1028508085 - 2⁹ = 1028507573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12061 + ... + 46930.

It is an arithmetic number, because the mean of its divisors is an integer number (84417552).

Almost surely, 2^1028508085 is an apocalyptic number.

It is an amenable number.

1028508085 is a deficient number, since it is larger than the sum of its proper divisors (322172747).

1028508085 is a wasteful number, since it uses less digits than its factorization.

1028508085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59324.

The product of its (nonzero) digits is 25600, while the sum is 37.

The square root of 1028508085 is about 32070.3614728615. The cubic root of 1028508085 is about 1009.4137973374.

The spelling of 1028508085 in words is "one billion, twenty-eight million, five hundred eight thousand, eighty-five".