304221372 has 48 divisors (see below), whose sum is σ = 873664512. Its totient is φ = 80233920.

The previous prime is 304221371. The next prime is 304221373. The reversal of 304221372 is 273122403.

It is an interprime number because it is at equal distance from previous prime (304221371) and next prime (304221373).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304221371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138204 + ... + 140387.

It is an arithmetic number, because the mean of its divisors is an integer number (18201344).

Almost surely, 2^304221372 is an apocalyptic number.

It is an amenable number.

304221372 is an abundant number, since it is smaller than the sum of its proper divisors (569443140).

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

304221372 is a wasteful number, since it uses less digits than its factorization.

304221372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278618 (or 278616 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 304221372 is about 17441.9428963634. The cubic root of 304221372 is about 672.5582538685.

Adding to 304221372 its reverse (273122403), we get a palindrome (577343775).

The spelling of 304221372 in words is "three hundred four million, two hundred twenty-one thousand, three hundred seventy-two".