1191068928 has 288 divisors, whose sum is σ = 4081459200. Its totient is φ = 335591424.

The previous prime is 1191068881. The next prime is 1191068939. The reversal of 1191068928 is 8298601911.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4983433 + ... + 4983671.

Almost surely, 2^1191068928 is an apocalyptic number.

1191068928 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 1191068928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2040729600).

1191068928 is an abundant number, since it is smaller than the sum of its proper divisors (2890390272).

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

1191068928 is a wasteful number, since it uses less digits than its factorization.

1191068928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 45.

The square root of 1191068928 is about 34511.8664809656. The cubic root of 1191068928 is about 1060.0157016779.

The spelling of 1191068928 in words is "one billion, one hundred ninety-one million, sixty-eight thousand, nine hundred twenty-eight".