280222800 has 480 divisors, whose sum is σ = 1115928576. Its totient is φ = 59136000.

The previous prime is 280222799. The next prime is 280222807. The reversal of 280222800 is 8222082.

280222800 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×280222800³ (a number of 26 digits) contains 333 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280222807) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 3946765 + ... + 3946835.

Almost surely, 2^280222800 is an apocalyptic number.

280222800 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 280222800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557964288).

280222800 is an abundant number, since it is smaller than the sum of its proper divisors (835705776).

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

280222800 is a wasteful number, since it uses less digits than its factorization.

280222800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 280222800 is about 16739.8566302104. The cubic root of 280222800 is about 654.3867383128.

Adding to 280222800 its reverse (8222082), we get a palindrome (288444882).

The spelling of 280222800 in words is "two hundred eighty million, two hundred twenty-two thousand, eight hundred".