349290220 has 12 divisors (see below), whose sum is σ = 733509504. Its totient is φ = 139716080.

The previous prime is 349290199. The next prime is 349290283. The reversal of 349290220 is 22092943.

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 3 ways as a sum of consecutive naturals, for example, 8732236 + ... + 8732275.

It is an arithmetic number, because the mean of its divisors is an integer number (61125792).

Almost surely, 2^349290220 is an apocalyptic number.

It is an amenable number.

349290220 is an abundant number, since it is smaller than the sum of its proper divisors (384219284).

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

349290220 is a wasteful number, since it uses less digits than its factorization.

349290220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17464520 (or 17464518 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 349290220 is about 18689.3076383263. The cubic root of 349290220 is about 704.2531668458.

The spelling of 349290220 in words is "three hundred forty-nine million, two hundred ninety thousand, two hundred twenty".