349428212 has 18 divisors (see below), whose sum is σ = 711336402. Its totient is φ = 149754864.

The previous prime is 349428203. The next prime is 349428229. The reversal of 349428212 is 212824943.

It can be written as a sum of positive squares in only one way, i.e., 347225956 + 2202256 = 18634^2 + 1484^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 891203 + ... + 891594.

It is an arithmetic number, because the mean of its divisors is an integer number (39518689).

Almost surely, 2^349428212 is an apocalyptic number.

It is an amenable number.

349428212 is an abundant number, since it is smaller than the sum of its proper divisors (361908190).

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

349428212 is a wasteful number, since it uses less digits than its factorization.

349428212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782815 (or 1782806 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 349428212 is about 18692.9990103247. Note that the first 3 decimals coincide. The cubic root of 349428212 is about 704.3458963323.

The spelling of 349428212 in words is "three hundred forty-nine million, four hundred twenty-eight thousand, two hundred twelve".