1121112828 has 72 divisors (see below), whose sum is σ = 3225995136. Its totient is φ = 324957600.

The previous prime is 1121112823. The next prime is 1121112829. The reversal of 1121112828 is 8282111211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121112823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52438 + ... + 70653.

It is an arithmetic number, because the mean of its divisors is an integer number (44805488).

Almost surely, 2^1121112828 is an apocalyptic number.

1121112828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1121112828 is an abundant number, since it is smaller than the sum of its proper divisors (2104882308).

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

1121112828 is a wasteful number, since it uses less digits than its factorization.

1121112828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123135 (or 123130 counting only the distinct ones).

The product of its digits is 512, while the sum is 27.

The square root of 1121112828 is about 33483.0229818038. The cubic root of 1121112828 is about 1038.8426560904.

The spelling of 1121112828 in words is "one billion, one hundred twenty-one million, one hundred twelve thousand, eight hundred twenty-eight".