1112781600 has 216 divisors, whose sum is σ = 4484712960. Its totient is φ = 254338560.

The previous prime is 1112781599. The next prime is 1112781601. The reversal of 1112781600 is 61872111.

It is an interprime number because it is at equal distance from previous prime (1112781599) and next prime (1112781601).

It is not an unprimeable number, because it can be changed into a prime (1112781601) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 39361 + ... + 61439.

It is an arithmetic number, because the mean of its divisors is an integer number (20762560).

Almost surely, 2^1112781600 is an apocalyptic number.

1112781600 is a gapful number since it is divisible by the number (10) 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 1112781600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2242356480).

1112781600 is an abundant number, since it is smaller than the sum of its proper divisors (3371931360).

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

1112781600 is a wasteful number, since it uses less digits than its factorization.

1112781600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22112 (or 22096 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 27.

The square root of 1112781600 is about 33358.3812556905. The cubic root of 1112781600 is about 1036.2629684809.

The spelling of 1112781600 in words is "one billion, one hundred twelve million, seven hundred eighty-one thousand, six hundred".