112509820 has 24 divisors (see below), whose sum is σ = 239120784. Its totient is φ = 44461056.

The previous prime is 112509779. The next prime is 112509823. The reversal of 112509820 is 28905211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112509823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32229 + ... + 35548.

It is an arithmetic number, because the mean of its divisors is an integer number (9963366).

Almost surely, 2^112509820 is an apocalyptic number.

112509820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112509820 is an abundant number, since it is smaller than the sum of its proper divisors (126610964).

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

112509820 is a wasteful number, since it uses less digits than its factorization.

112509820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67869 (or 67867 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 112509820 is about 10607.0646269361. The cubic root of 112509820 is about 482.7587379767.

The spelling of 112509820 in words is "one hundred twelve million, five hundred nine thousand, eight hundred twenty".