280534 has 16 divisors (see below), whose sum is σ = 459648. Its totient is φ = 127872.

The previous prime is 280513. The next prime is 280537. The reversal of 280534 is 435082.

It is a d-powerful number, because it can be written as 2¹³ + 8³ + 5⁵ + 0 + 3⁸ + 4⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1147 + ... + 1369.

It is an arithmetic number, because the mean of its divisors is an integer number (28728).

2²⁸⁰⁵³⁴ is an apocalyptic number.

280534 is a deficient number, since it is larger than the sum of its proper divisors (179114).

280534 is a wasteful number, since it uses less digits than its factorization.

280534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 280534 is about 529.6546044358. The cubic root of 280534 is about 65.4628890645.

The spelling of 280534 in words is "two hundred eighty thousand, five hundred thirty-four".