280118 has 8 divisors (see below), whose sum is σ = 422712. Its totient is φ = 139216.

The previous prime is 280103. The next prime is 280121. The reversal of 280118 is 811082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a plaindrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 280118.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146 + ... + 762.

It is an arithmetic number, because the mean of its divisors is an integer number (52839).

2²⁸⁰¹¹⁸ is an apocalyptic number.

280118 is a deficient number, since it is larger than the sum of its proper divisors (142594).

280118 is a wasteful number, since it uses less digits than its factorization.

280118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 280118 is about 529.2617499877. The cubic root of 280118 is about 65.4305150518.

The spelling of 280118 in words is "two hundred eighty thousand, one hundred eighteen".