280222 has 4 divisors (see below), whose sum is σ = 420336. Its totient is φ = 140110.

The previous prime is 280219. The next prime is 280223. The reversal of 280222 is 222082.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 280196 and 280205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70054 + ... + 70057.

It is an arithmetic number, because the mean of its divisors is an integer number (105084).

2²⁸⁰²²² is an apocalyptic number.

280222 is a deficient number, since it is larger than the sum of its proper divisors (140114).

280222 is a wasteful number, since it uses less digits than its factorization.

280222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140113.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 280222 is about 529.3599909324. The cubic root of 280222 is about 65.4386115582.

The spelling of 280222 in words is "two hundred eighty thousand, two hundred twenty-two".