1028806488 has 64 divisors (see below), whose sum is σ = 2876812800. Its totient is φ = 340653600.

The previous prime is 1028806487. The next prime is 1028806511. The reversal of 1028806488 is 8846088201.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028806483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16845 + ... + 48387.

It is an arithmetic number, because the mean of its divisors is an integer number (44950200).

Almost surely, 2^1028806488 is an apocalyptic number.

1028806488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1028806488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1438406400).

1028806488 is an abundant number, since it is smaller than the sum of its proper divisors (1848006312).

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

1028806488 is a wasteful number, since it uses less digits than its factorization.

1028806488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31709 (or 31699 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 45.

The square root of 1028806488 is about 32075.0134528421. The cubic root of 1028806488 is about 1009.5114089440.

The spelling of 1028806488 in words is "one billion, twenty-eight million, eight hundred six thousand, four hundred eighty-eight".