303012220 has 48 divisors (see below), whose sum is σ = 730211328. Its totient is φ = 103464000.

The previous prime is 303012187. The next prime is 303012253. The reversal of 303012220 is 22210303.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (303012187) and next prime (303012253).

It is a self number, because there is not a number n which added to its sum of digits gives 303012220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30829 + ... + 39451.

It is an arithmetic number, because the mean of its divisors is an integer number (15212736).

Almost surely, 2^303012220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 303012220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365105664).

303012220 is an abundant number, since it is smaller than the sum of its proper divisors (427199108).

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

303012220 is a wasteful number, since it uses less digits than its factorization.

303012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8890 (or 8888 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 303012220 is about 17407.2461923189. The cubic root of 303012220 is about 671.6660253497. Note that the first 3 decimals are identical.

Adding to 303012220 its reverse (22210303), we get a palindrome (325222523).

The spelling of 303012220 in words is "three hundred three million, twelve thousand, two hundred twenty".