1028086660 has 24 divisors (see below), whose sum is σ = 2252851776. Its totient is φ = 393354720.

The previous prime is 1028086621. The next prime is 1028086663. The reversal of 1028086660 is 666808201.

It is not an unprimeable number, because it can be changed into a prime (1028086663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1117026 + ... + 1117945.

It is an arithmetic number, because the mean of its divisors is an integer number (93868824).

Almost surely, 2^1028086660 is an apocalyptic number.

1028086660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028086660 is an abundant number, since it is smaller than the sum of its proper divisors (1224765116).

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

1028086660 is a wasteful number, since it uses less digits than its factorization.

1028086660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235003 (or 2235001 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 1028086660 is about 32063.7904808524. The cubic root of 1028086660 is about 1009.2759114262.

The spelling of 1028086660 in words is "one billion, twenty-eight million, eighty-six thousand, six hundred sixty".