280471 has 4 divisors (see below), whose sum is σ = 282744. Its totient is φ = 278200.

The previous prime is 280463. The next prime is 280487. The reversal of 280471 is 174082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 174082 = 2 ⋅87041.

It is a cyclic number.

It is not a de Polignac number, because 280471 - 2³ = 280463 is a prime.

It is a super-3 number, since 3×280471³ = 66188896952781333, which contains 333 as substring.

It is a Duffinian number.

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, 940 + ... + 1201.

It is an arithmetic number, because the mean of its divisors is an integer number (70686).

2²⁸⁰⁴⁷¹ is an apocalyptic number.

280471 is a deficient number, since it is larger than the sum of its proper divisors (2273).

280471 is a wasteful number, since it uses less digits than its factorization.

280471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 280471 is about 529.5951283764. The cubic root of 280471 is about 65.4579883267.

The spelling of 280471 in words is "two hundred eighty thousand, four hundred seventy-one".