347280 has 40 divisors (see below), whose sum is σ = 1077312. Its totient is φ = 92544.

The previous prime is 347257. The next prime is 347287. The reversal of 347280 is 82743.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 347280.

It is not an unprimeable number, because it can be changed into a prime (347287) by changing a digit.

347280 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484 + ... + 963.

2³⁴⁷²⁸⁰ is an apocalyptic number.

347280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

347280 is an abundant number, since it is smaller than the sum of its proper divisors (730032).

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

347280 is a wasteful number, since it uses less digits than its factorization.

347280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463 (or 1457 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 347280 is about 589.3046750196. The cubic root of 347280 is about 70.2899537588.

The spelling of 347280 in words is "three hundred forty-seven thousand, two hundred eighty".