1099170828 has 72 divisors (see below), whose sum is σ = 3313459968. Its totient is φ = 300392928.

The previous prime is 1099170769. The next prime is 1099170829. The reversal of 1099170828 is 8280719901.

It is not an unprimeable number, because it can be changed into a prime (1099170829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89026 + ... + 100617.

Almost surely, 2^1099170828 is an apocalyptic number.

1099170828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1099170828 is an abundant number, since it is smaller than the sum of its proper divisors (2214289140).

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

1099170828 is a wasteful number, since it uses less digits than its factorization.

1099170828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189683 (or 189678 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 45.

The square root of 1099170828 is about 33153.7453087883. The cubic root of 1099170828 is about 1032.0206751762.

The spelling of 1099170828 in words is "one billion, ninety-nine million, one hundred seventy thousand, eight hundred twenty-eight".