349730 has 16 divisors (see below), whose sum is σ = 645624. Its totient is φ = 136320.

The previous prime is 349729. The next prime is 349753. The reversal of 349730 is 37943.

It can be written as a sum of positive squares in 4 ways, for example, as 96721 + 253009 = 311^2 + 503^2 .

It is a super-2 number, since 2×349730² = 244622145800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 349730.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17 + ... + 836.

2³⁴⁹⁷³⁰ is an apocalyptic number.

349730 is a deficient number, since it is larger than the sum of its proper divisors (295894).

349730 is a wasteful number, since it uses less digits than its factorization.

349730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 349730 is about 591.3797426358. The cubic root of 349730 is about 70.4548610335.

Multiplying 349730 by its sum of digits (26), we get a triangular number (9092980 = T₄₂₆₄).

The spelling of 349730 in words is "three hundred forty-nine thousand, seven hundred thirty".