306421384 has 16 divisors (see below), whose sum is σ = 574747020. Its totient is φ = 153155520.

The previous prime is 306421321. The next prime is 306421399. The reversal of 306421384 is 483124603.

It can be written as a sum of positive squares in 2 ways, for example, as 305900100 + 521284 = 17490^2 + 722^2 .

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, 25854 + ... + 35794.

Almost surely, 2^306421384 is an apocalyptic number.

It is an amenable number.

306421384 is a deficient number, since it is larger than the sum of its proper divisors (268325636).

306421384 is a wasteful number, since it uses less digits than its factorization.

306421384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13800 (or 13796 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 306421384 is about 17504.8960008336. The cubic root of 306421384 is about 674.1755890349.

Adding to 306421384 its reverse (483124603), we get a palindrome (789545987).

The spelling of 306421384 in words is "three hundred six million, four hundred twenty-one thousand, three hundred eighty-four".