303222540 has 192 divisors, whose sum is σ = 940584960. Its totient is φ = 72683520.

The previous prime is 303222527. The next prime is 303222553. The reversal of 303222540 is 45222303.

It is an interprime number because it is at equal distance from previous prime (303222527) and next prime (303222553).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3838221 + ... + 3838299.

It is an arithmetic number, because the mean of its divisors is an integer number (4898880).

Almost surely, 2^303222540 is an apocalyptic number.

303222540 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 303222540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (470292480).

303222540 is an abundant number, since it is smaller than the sum of its proper divisors (637362420).

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

303222540 is a wasteful number, since it uses less digits than its factorization.

303222540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 303222540 is about 17413.2863067257. The cubic root of 303222540 is about 671.8213899608.

Adding to 303222540 its reverse (45222303), we get a palindrome (348444843).

The spelling of 303222540 in words is "three hundred three million, two hundred twenty-two thousand, five hundred forty".