112721280 has 128 divisors (see below), whose sum is σ = 410676480. Its totient is φ = 25761792.

The previous prime is 112721267. The next prime is 112721293. The reversal of 112721280 is 82127211.

It is an interprime number because it is at equal distance from previous prime (112721267) and next prime (112721293).

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 112721280.

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, 9247 + ... + 17633.

It is an arithmetic number, because the mean of its divisors is an integer number (3208410).

Almost surely, 2^112721280 is an apocalyptic number.

112721280 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 112721280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205338240).

112721280 is an abundant number, since it is smaller than the sum of its proper divisors (297955200).

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

112721280 is an equidigital number, since it uses as much as digits as its factorization.

112721280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8416 (or 8404 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 112721280 is about 10617.0278326846. The cubic root of 112721280 is about 483.0609938876.

Adding to 112721280 its reverse (82127211), we get a palindrome (194848491).

The spelling of 112721280 in words is "one hundred twelve million, seven hundred twenty-one thousand, two hundred eighty".