280550112 has 48 divisors (see below), whose sum is σ = 742275072. Its totient is φ = 92776320.

The previous prime is 280550087. The next prime is 280550129. The reversal of 280550112 is 211055082.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687 + ... + 23697.

It is an arithmetic number, because the mean of its divisors is an integer number (15464064).

Almost surely, 2^280550112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280550112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371137536).

280550112 is an abundant number, since it is smaller than the sum of its proper divisors (461724960).

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

280550112 is a wasteful number, since it uses less digits than its factorization.

280550112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23151 (or 23143 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 280550112 is about 16749.6302048732. The cubic root of 280550112 is about 654.6414229095.

The spelling of 280550112 in words is "two hundred eighty million, five hundred fifty thousand, one hundred twelve".