280012 has 6 divisors (see below), whose sum is σ = 490028. Its totient is φ = 140004.

The previous prime is 280009. The next prime is 280013. The reversal of 280012 is 210082.

280012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 279974 and 280001.

It is not an unprimeable number, because it can be changed into a prime (280013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34998 + ... + 35005.

2²⁸⁰⁰¹² is an apocalyptic number.

It is an amenable number.

280012 is a deficient number, since it is larger than the sum of its proper divisors (210016).

280012 is a wasteful number, since it uses less digits than its factorization.

280012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70007 (or 70005 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 280012 is about 529.1616010256. The cubic root of 280012 is about 65.4222607808.

Adding to 280012 its reverse (210082), we get a palindrome (490094).

The spelling of 280012 in words is "two hundred eighty thousand, twelve".