280498 has 4 divisors (see below), whose sum is σ = 420750. Its totient is φ = 140248.

The previous prime is 280487. The next prime is 280499. The reversal of 280498 is 894082.

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

It can be written as a sum of positive squares in only one way, i.e., 247009 + 33489 = 497^2 + 183^2 .

It is not an unprimeable number, because it can be changed into a prime (280499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70123 + ... + 70126.

2²⁸⁰⁴⁹⁸ is an apocalyptic number.

280498 is a deficient number, since it is larger than the sum of its proper divisors (140252).

280498 is a wasteful number, since it uses less digits than its factorization.

280498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140251.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 280498 is about 529.6206189340. The cubic root of 280498 is about 65.4600887327.

The spelling of 280498 in words is "two hundred eighty thousand, four hundred ninety-eight".