280212 has 24 divisors (see below), whose sum is σ = 688800. Its totient is φ = 88416.

The previous prime is 280207. The next prime is 280219. The reversal of 280212 is 212082.

It is a junction number, because it is equal to n+sod(n) for n = 280191 and 280200.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 280212.

It is not an unprimeable number, because it can be changed into a prime (280219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387 + ... + 842.

It is an arithmetic number, because the mean of its divisors is an integer number (28700).

2²⁸⁰²¹² is an apocalyptic number.

It is an amenable number.

280212 is an abundant number, since it is smaller than the sum of its proper divisors (408588).

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

280212 is a wasteful number, since it uses less digits than its factorization.

280212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255 (or 1253 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 280212 is about 529.3505454800. The cubic root of 280212 is about 65.4378331351.

Adding to 280212 its reverse (212082), we get a palindrome (492294).

The spelling of 280212 in words is "two hundred eighty thousand, two hundred twelve".