304220416 has 18 divisors (see below), whose sum is σ = 607252982. Its totient is φ = 152110080.

The previous prime is 304220387. The next prime is 304220437. The reversal of 304220416 is 614022403.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 187580416 + 116640000 = 13696^2 + 10800^2 .

It is a super-2 number, since 2×304220416² = 185100123022426112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593925 + ... + 594436.

Almost surely, 2^304220416 is an apocalyptic number.

It is an amenable number.

304220416 is a deficient number, since it is larger than the sum of its proper divisors (303032566).

304220416 is an equidigital number, since it uses as much as digits as its factorization.

304220416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188377 (or 1188363 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 304220416 is about 17441.9154911380. The cubic root of 304220416 is about 672.5575493746.

Adding to 304220416 its reverse (614022403), we get a palindrome (918242819).

The spelling of 304220416 in words is "three hundred four million, two hundred twenty thousand, four hundred sixteen".