1121984828 has 36 divisors (see below), whose sum is σ = 2068346280. Its totient is φ = 532373184.

The previous prime is 1121984821. The next prime is 1121984839. The reversal of 1121984828 is 8284891211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121984821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195650 + ... + 201302.

Almost surely, 2^1121984828 is an apocalyptic number.

It is an amenable number.

1121984828 is a deficient number, since it is larger than the sum of its proper divisors (946361452).

1121984828 is a wasteful number, since it uses less digits than its factorization.

1121984828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5774 (or 5743 counting only the distinct ones).

The product of its digits is 73728, while the sum is 44.

The square root of 1121984828 is about 33496.0419751349. The cubic root of 1121984828 is about 1039.1119230821. Note that the first 3 decimals are identical.

The spelling of 1121984828 in words is "one billion, one hundred twenty-one million, nine hundred eighty-four thousand, eight hundred twenty-eight".