280426 has 8 divisors (see below), whose sum is σ = 434304. Its totient is φ = 135660.

The previous prime is 280411. The next prime is 280451. The reversal of 280426 is 624082.

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

It is a junction number, because it is equal to n+sod(n) for n = 280397 and 280406.

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, 2200 + ... + 2323.

It is an arithmetic number, because the mean of its divisors is an integer number (54288).

2²⁸⁰⁴²⁶ is an apocalyptic number.

280426 is a deficient number, since it is larger than the sum of its proper divisors (153878).

280426 is a wasteful number, since it uses less digits than its factorization.

280426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4556.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 280426 is about 529.5526413870. The cubic root of 280426 is about 65.4544873503.

The spelling of 280426 in words is "two hundred eighty thousand, four hundred twenty-six".