280112280 has 192 divisors, whose sum is σ = 995224320. Its totient is φ = 61781760.

The previous prime is 280112279. The next prime is 280112297. The reversal of 280112280 is 82211082.

280112280 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 280112280.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 807067 + ... + 807413.

It is an arithmetic number, because the mean of its divisors is an integer number (5183460).

Almost surely, 2^280112280 is an apocalyptic number.

280112280 is a gapful number since it is divisible by the number (20) 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 280112280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (497612160).

280112280 is an abundant number, since it is smaller than the sum of its proper divisors (715112040).

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

280112280 is a wasteful number, since it uses less digits than its factorization.

280112280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 280112280 is about 16736.5552011159. Note that the first 3 decimals coincide. The cubic root of 280112280 is about 654.3006968577.

The spelling of 280112280 in words is "two hundred eighty million, one hundred twelve thousand, two hundred eighty".