304221422 has 4 divisors (see below), whose sum is σ = 456332136. Its totient is φ = 152110710.

The previous prime is 304221403. The next prime is 304221451. The reversal of 304221422 is 224122403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 224122403 = 3623 ⋅61861.

It is a junction number, because it is equal to n+sod(n) for n = 304221394 and 304221403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76055354 + ... + 76055357.

It is an arithmetic number, because the mean of its divisors is an integer number (114083034).

Almost surely, 2^304221422 is an apocalyptic number.

304221422 is a deficient number, since it is larger than the sum of its proper divisors (152110714).

304221422 is a wasteful number, since it uses less digits than its factorization.

304221422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152110713.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 304221422 is about 17441.9443296899. The cubic root of 304221422 is about 672.5582907144.

Adding to 304221422 its reverse (224122403), we get a palindrome (528343825).

The spelling of 304221422 in words is "three hundred four million, two hundred twenty-one thousand, four hundred twenty-two".