349770 has 32 divisors (see below), whose sum is σ = 855360. Its totient is φ = 91520.

The previous prime is 349759. The next prime is 349787. The reversal of 349770 is 77943.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 349770.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2605 + ... + 2735.

It is an arithmetic number, because the mean of its divisors is an integer number (26730).

2³⁴⁹⁷⁷⁰ is an apocalyptic number.

349770 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

349770 is an abundant number, since it is smaller than the sum of its proper divisors (505590).

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

349770 is a wasteful number, since it uses less digits than its factorization.

349770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 349770 is about 591.4135608861. The cubic root of 349770 is about 70.4575469979.

The spelling of 349770 in words is "three hundred forty-nine thousand, seven hundred seventy".