308918434 has 16 divisors (see below), whose sum is σ = 508156416. Its totient is φ = 139680400.

The previous prime is 308918413. The next prime is 308918459. The reversal of 308918434 is 434819803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32557 + ... + 40960.

It is an arithmetic number, because the mean of its divisors is an integer number (31759776).

Almost surely, 2^308918434 is an apocalyptic number.

308918434 is a deficient number, since it is larger than the sum of its proper divisors (199237982).

308918434 is a wasteful number, since it uses less digits than its factorization.

308918434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73721.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 308918434 is about 17576.0756143116. The cubic root of 308918434 is about 676.0019388271.

The spelling of 308918434 in words is "three hundred eight million, nine hundred eighteen thousand, four hundred thirty-four".