303220224 has 120 divisors (see below), whose sum is σ = 913481712. Its totient is φ = 96645120.

The previous prime is 303220187. The next prime is 303220243. The reversal of 303220224 is 422022303.

It is a super-2 number, since 2×303220224² = 183885008485220352, which contains 22 as substring.

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 = 303220197 and 303220206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104554 + ... + 107414.

Almost surely, 2^303220224 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 303220224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456740856).

303220224 is an abundant number, since it is smaller than the sum of its proper divisors (610261488).

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

303220224 is a wasteful number, since it uses less digits than its factorization.

303220224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908 (or 2889 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 303220224 is about 17413.2198056534. The cubic root of 303220224 is about 671.8196795094.

Adding to 303220224 its reverse (422022303), we get a palindrome (725242527).

The spelling of 303220224 in words is "three hundred three million, two hundred twenty thousand, two hundred twenty-four".