330305220 has 72 divisors (see below), whose sum is σ = 1145062464. Its totient is φ = 75498048.

The previous prime is 330305197. The next prime is 330305251. The reversal of 330305220 is 22503033.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 330305193 and 330305202.

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, 129814 + ... + 132333.

Almost surely, 2^330305220 is an apocalyptic number.

330305220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

330305220 is an abundant number, since it is smaller than the sum of its proper divisors (814757244).

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

330305220 is a wasteful number, since it uses less digits than its factorization.

330305220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262169 (or 262164 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 330305220 is about 18174.3010869744. The cubic root of 330305220 is about 691.2553077930.

Adding to 330305220 its reverse (22503033), we get a palindrome (352808253).

The spelling of 330305220 in words is "three hundred thirty million, three hundred five thousand, two hundred twenty".