280147 has 8 divisors (see below), whose sum is σ = 330752. Its totient is φ = 232200.

The previous prime is 280139. The next prime is 280183. The reversal of 280147 is 741082.

280147 is nontrivially palindromic in base 14.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 280147 - 2³ = 280139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280187) 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, 429 + ... + 862.

It is an arithmetic number, because the mean of its divisors is an integer number (41344).

2²⁸⁰¹⁴⁷ is an apocalyptic number.

280147 is a deficient number, since it is larger than the sum of its proper divisors (50605).

280147 is a wasteful number, since it uses less digits than its factorization.

280147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329.

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

The square root of 280147 is about 529.2891459307. The cubic root of 280147 is about 65.4327729329.

The spelling of 280147 in words is "two hundred eighty thousand, one hundred forty-seven".