349720 has 32 divisors (see below), whose sum is σ = 900000. Its totient is φ = 119808.

The previous prime is 349717. The next prime is 349729. The reversal of 349720 is 27943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345 + ... + 904.

It is an arithmetic number, because the mean of its divisors is an integer number (28125).

2³⁴⁹⁷²⁰ is an apocalyptic number.

It is an amenable number.

349720 is an abundant number, since it is smaller than the sum of its proper divisors (550280).

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

349720 is a wasteful number, since it uses less digits than its factorization.

349720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267 (or 1263 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 349720 is about 591.3712877711. The cubic root of 349720 is about 70.4541895104.

The spelling of 349720 in words is "three hundred forty-nine thousand, seven hundred twenty".