351226220 has 12 divisors (see below), whose sum is σ = 737575104. Its totient is φ = 140490480.

The previous prime is 351226207. The next prime is 351226259. The reversal of 351226220 is 22622153.

351226220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8780636 + ... + 8780675.

It is an arithmetic number, because the mean of its divisors is an integer number (61464592).

Almost surely, 2^351226220 is an apocalyptic number.

It is an amenable number.

351226220 is an abundant number, since it is smaller than the sum of its proper divisors (386348884).

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

351226220 is a wasteful number, since it uses less digits than its factorization.

351226220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17561320 (or 17561318 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 351226220 is about 18741.0303878949. The cubic root of 351226220 is about 705.5519176267.

Adding to 351226220 its reverse (22622153), we get a palindrome (373848373).

The spelling of 351226220 in words is "three hundred fifty-one million, two hundred twenty-six thousand, two hundred twenty".