304222072 has 192 divisors, whose sum is σ = 804384000. Its totient is φ = 104924160.

The previous prime is 304222043. The next prime is 304222097. The reversal of 304222072 is 270222403.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2188579 + ... + 2188717.

It is an arithmetic number, because the mean of its divisors is an integer number (4189500).

Almost surely, 2^304222072 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 304222072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402192000).

304222072 is an abundant number, since it is smaller than the sum of its proper divisors (500161928).

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

304222072 is a wasteful number, since it uses less digits than its factorization.

304222072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 304222072 is about 17441.9629629236. The cubic root of 304222072 is about 672.5587697105.

Adding to 304222072 its reverse (270222403), we get a palindrome (574444475).

The spelling of 304222072 in words is "three hundred four million, two hundred twenty-two thousand, seventy-two".