347420 has 24 divisors (see below), whose sum is σ = 756000. Its totient is φ = 133952.

The previous prime is 347411. The next prime is 347437. The reversal of 347420 is 24743.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an Ulam number.

It is a d-powerful number, because it can be written as 3⁹ + 4⁸ + 4⁹ + 7² + 2³ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 347392 and 347401.

It is a congruent number.

It is an unprimeable number.

347420 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281 + ... + 879.

It is an arithmetic number, because the mean of its divisors is an integer number (31500).

2³⁴⁷⁴²⁰ 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 347420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378000).

347420 is an abundant number, since it is smaller than the sum of its proper divisors (408580).

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

347420 is a wasteful number, since it uses less digits than its factorization.

347420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 347420 is about 589.4234471074. The cubic root of 347420 is about 70.2993978879.

347420 divided by its sum of digits (20) gives a palindrome (17371).

It can be divided in two parts, 347 and 420, that added together give a palindrome (767).

The spelling of 347420 in words is "three hundred forty-seven thousand, four hundred twenty", and thus it is an iban number.