280046 has 8 divisors (see below), whose sum is σ = 452424. Its totient is φ = 129240.

The previous prime is 280037. The next prime is 280061. The reversal of 280046 is 640082.

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 16.

It is a congruent number.

It is an unprimeable number.

280046 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5360 + ... + 5411.

It is an arithmetic number, because the mean of its divisors is an integer number (56553).

2²⁸⁰⁰⁴⁶ is an apocalyptic number.

280046 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

280046 is a deficient number, since it is larger than the sum of its proper divisors (172378).

280046 is a wasteful number, since it uses less digits than its factorization.

280046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10786.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 280046 is about 529.1937263423. The cubic root of 280046 is about 65.4249086040.

The spelling of 280046 in words is "two hundred eighty thousand, forty-six".