306220004 has 6 divisors (see below), whose sum is σ = 535885014. Its totient is φ = 153110000.

The previous prime is 306220003. The next prime is 306220009. The reversal of 306220004 is 400022603.

It can be written as a sum of positive squares in only one way, i.e., 306180004 + 40000 = 17498^2 + 200^2 .

It is not an unprimeable number, because it can be changed into a prime (306220001) 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 as a sum of consecutive naturals, namely, 38277497 + ... + 38277504.

It is an arithmetic number, because the mean of its divisors is an integer number (89314169).

Almost surely, 2^306220004 is an apocalyptic number.

It is an amenable number.

306220004 is a deficient number, since it is larger than the sum of its proper divisors (229665010).

306220004 is a wasteful number, since it uses less digits than its factorization.

306220004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76555005 (or 76555003 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 306220004 is about 17499.1429504419. The cubic root of 306220004 is about 674.0278673682.

Adding to 306220004 its reverse (400022603), we get a palindrome (706242607).

The spelling of 306220004 in words is "three hundred six million, two hundred twenty thousand, four".