1112129856 has 168 divisors, whose sum is σ = 3357579264. Its totient is φ = 351267840.

The previous prime is 1112129827. The next prime is 1112129897. The reversal of 1112129856 is 6589212111.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1112129856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1682166 + ... + 1682826.

Almost surely, 2^1112129856 is an apocalyptic number.

1112129856 is a gapful number since it is divisible by the number (16) 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 1112129856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1678789632).

1112129856 is an abundant number, since it is smaller than the sum of its proper divisors (2245449408).

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

1112129856 is a wasteful number, since it uses less digits than its factorization.

1112129856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829 (or 816 counting only the distinct ones).

The product of its digits is 8640, while the sum is 36.

The square root of 1112129856 is about 33348.6110055576. The cubic root of 1112129856 is about 1036.0606196795.

The spelling of 1112129856 in words is "one billion, one hundred twelve million, one hundred twenty-nine thousand, eight hundred fifty-six".