347289340 has 24 divisors (see below), whose sum is σ = 741671280. Its totient is φ = 136560768.

The previous prime is 347289317. The next prime is 347289367. The reversal of 347289340 is 43982743.

It is a junction number, because it is equal to n+sod(n) for n = 347289293 and 347289302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145977 + ... + 148336.

It is an arithmetic number, because the mean of its divisors is an integer number (30902970).

Almost surely, 2^347289340 is an apocalyptic number.

It is an amenable number.

347289340 is an abundant number, since it is smaller than the sum of its proper divisors (394381940).

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

347289340 is a wasteful number, since it uses less digits than its factorization.

347289340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294381 (or 294379 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 347289340 is about 18635.7006844390. The cubic root of 347289340 is about 702.9058389614.

The spelling of 347289340 in words is "three hundred forty-seven million, two hundred eighty-nine thousand, three hundred forty".