280441 has 4 divisors (see below), whose sum is σ = 320512. Its totient is φ = 240372.

The previous prime is 280411. The next prime is 280451. The reversal of 280441 is 144082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 280441 - 2⁵ = 280409 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20025 + ... + 20038.

It is an arithmetic number, because the mean of its divisors is an integer number (80128).

2²⁸⁰⁴⁴¹ is an apocalyptic number.

It is an amenable number.

280441 is a deficient number, since it is larger than the sum of its proper divisors (40071).

280441 is an equidigital number, since it uses as much as digits as its factorization.

280441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40070.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 280441 is about 529.5668040956. The cubic root of 280441 is about 65.4556543840.

The spelling of 280441 in words is "two hundred eighty thousand, four hundred forty-one".