112781808 has 100 divisors (see below), whose sum is σ = 345692160. Its totient is φ = 35375616.

The previous prime is 112781789. The next prime is 112781831. The reversal of 112781808 is 808187211.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19473 + ... + 24591.

Almost surely, 2^112781808 is an apocalyptic number.

112781808 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 112781808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172846080).

112781808 is an abundant number, since it is smaller than the sum of its proper divisors (232910352).

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

112781808 is a wasteful number, since it uses less digits than its factorization.

112781808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5156 (or 5141 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 36.

The square root of 112781808 is about 10619.8779654005. The cubic root of 112781808 is about 483.1474415810.

The spelling of 112781808 in words is "one hundred twelve million, seven hundred eighty-one thousand, eight hundred eight".