350555220 has 72 divisors (see below), whose sum is σ = 1071077280. Its totient is φ = 92802240.

The previous prime is 350555209. The next prime is 350555237. The reversal of 350555220 is 22555053.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18015 + ... + 32025.

Almost surely, 2^350555220 is an apocalyptic number.

350555220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 350555220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (535538640).

350555220 is an abundant number, since it is smaller than the sum of its proper divisors (720522060).

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

350555220 is a wasteful number, since it uses less digits than its factorization.

350555220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14165 (or 14160 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 350555220 is about 18723.1199323190. The cubic root of 350555220 is about 705.1023240645.

The spelling of 350555220 in words is "three hundred fifty million, five hundred fifty-five thousand, two hundred twenty".