347340640 has 48 divisors (see below), whose sum is σ = 823882752. Its totient is φ = 138379264.

The previous prime is 347340557. The next prime is 347340667. The reversal of 347340640 is 46043743.

347340640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 36897 + ... + 45343.

It is an arithmetic number, because the mean of its divisors is an integer number (17164224).

Almost surely, 2^347340640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 347340640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (411941376).

347340640 is an abundant number, since it is smaller than the sum of its proper divisors (476542112).

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

347340640 is a wasteful number, since it uses less digits than its factorization.

347340640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8719 (or 8711 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 31.

The square root of 347340640 is about 18637.0770240400. The cubic root of 347340640 is about 702.9404472741.

The spelling of 347340640 in words is "three hundred forty-seven million, three hundred forty thousand, six hundred forty".