280027 has 4 divisors (see below), whose sum is σ = 305496. Its totient is φ = 254560.

The previous prime is 280013. The next prime is 280031. The reversal of 280027 is 720082.

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

It is a cyclic number.

It is not a de Polignac number, because 280027 - 2¹⁵ = 247259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 279986 and 280013.

It is not an unprimeable number, because it can be changed into a prime (280037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12718 + ... + 12739.

It is an arithmetic number, because the mean of its divisors is an integer number (76374).

2²⁸⁰⁰²⁷ is an apocalyptic number.

280027 is a deficient number, since it is larger than the sum of its proper divisors (25469).

280027 is a wasteful number, since it uses less digits than its factorization.

280027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25468.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 280027 is about 529.1757741998. The cubic root of 280027 is about 65.4234289645.

The spelling of 280027 in words is "two hundred eighty thousand, twenty-seven".