349758 has 40 divisors (see below), whose sum is σ = 836352. Its totient is φ = 108864.

The previous prime is 349753. The next prime is 349759. The reversal of 349758 is 857943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349753) by changing a digit.

349758 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 (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2691 + ... + 2817.

2³⁴⁹⁷⁵⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 349758, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418176).

349758 is an abundant number, since it is smaller than the sum of its proper divisors (486594).

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

349758 is a wasteful number, since it uses less digits than its factorization.

349758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 149 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 349758 is about 591.4034156141. The cubic root of 349758 is about 70.4567412301.

The spelling of 349758 in words is "three hundred forty-nine thousand, seven hundred fifty-eight".