280098 has 80 divisors (see below), whose sum is σ = 813120. Its totient is φ = 69984.

The previous prime is 280097. The next prime is 280099. The reversal of 280098 is 890082.

It is an interprime number because it is at equal distance from previous prime (280097) and next prime (280099).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 14.

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 280098.

It is not an unprimeable number, because it can be changed into a prime (280097) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 14733 + ... + 14751.

It is an arithmetic number, because the mean of its divisors is an integer number (10164).

2²⁸⁰⁰⁹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406560).

280098 is an abundant number, since it is smaller than the sum of its proper divisors (533022).

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

280098 is a wasteful number, since it uses less digits than its factorization.

280098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53 (or 44 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 280098 is about 529.2428554076. The cubic root of 280098 is about 65.4289578015.

The spelling of 280098 in words is "two hundred eighty thousand, ninety-eight".