112661720 has 64 divisors (see below), whose sum is σ = 274713120. Its totient is φ = 41416704.

The previous prime is 112661713. The next prime is 112661741. The reversal of 112661720 is 27166211.

It is a self number, because there is not a number n which added to its sum of digits gives 112661720.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27314 + ... + 31166.

Almost surely, 2^112661720 is an apocalyptic number.

112661720 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 112661720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137356560).

112661720 is an abundant number, since it is smaller than the sum of its proper divisors (162051400).

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

112661720 is a wasteful number, since it uses less digits than its factorization.

112661720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3924 (or 3920 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 112661720 is about 10614.2225339400. Note that the first 3 decimals coincide. The cubic root of 112661720 is about 482.9758985040.

The spelling of 112661720 in words is "one hundred twelve million, six hundred sixty-one thousand, seven hundred twenty".