304450220 has 12 divisors (see below), whose sum is σ = 639345504. Its totient is φ = 121780080.

The previous prime is 304450219. The next prime is 304450249. The reversal of 304450220 is 22054403.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 15222511 = 304450220 / (3 + 0 + 4 + 4 + 5 + 0 + 2 + 2 + 0).

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 304450192 and 304450201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7611236 + ... + 7611275.

It is an arithmetic number, because the mean of its divisors is an integer number (53278792).

Almost surely, 2^304450220 is an apocalyptic number.

It is an amenable number.

304450220 is an abundant number, since it is smaller than the sum of its proper divisors (334895284).

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

304450220 is a wasteful number, since it uses less digits than its factorization.

304450220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15222520 (or 15222518 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 304450220 is about 17448.5019414275. The cubic root of 304450220 is about 672.7268537196.

The spelling of 304450220 in words is "three hundred four million, four hundred fifty thousand, two hundred twenty".