280960 has 32 divisors (see below), whose sum is σ = 673200. Its totient is φ = 112128.

The previous prime is 280957. The next prime is 280963. The reversal of 280960 is 69082.

It is an interprime number because it is at equal distance from previous prime (280957) and next prime (280963).

It is a tau number, because it is divible by the number of its divisors (32).

It is a cake number, because a cake can be divided into 280960 parts by 119 planar cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421 + ... + 859.

2²⁸⁰⁹⁶⁰ is an apocalyptic number.

280960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336600).

280960 is an abundant number, since it is smaller than the sum of its proper divisors (392240).

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

280960 is an equidigital number, since it uses as much as digits as its factorization.

280960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 280960 is about 530.0566007513. The cubic root of 280960 is about 65.4960081478.

The spelling of 280960 in words is "two hundred eighty thousand, nine hundred sixty".