308435144 has 16 divisors (see below), whose sum is σ = 578638620. Its totient is φ = 154131520.

The previous prime is 308435137. The next prime is 308435161. The reversal of 308435144 is 441534803.

It can be written as a sum of positive squares in 2 ways, for example, as 284327044 + 24108100 = 16862^2 + 4910^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 308435144.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6014 + ... + 25554.

Almost surely, 2^308435144 is an apocalyptic number.

It is an amenable number.

308435144 is a deficient number, since it is larger than the sum of its proper divisors (270203476).

308435144 is a wasteful number, since it uses less digits than its factorization.

308435144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21520 (or 21516 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 308435144 is about 17562.3217143976. The cubic root of 308435144 is about 675.6492292212.

Adding to 308435144 its reverse (441534803), we get a palindrome (749969947).

The spelling of 308435144 in words is "three hundred eight million, four hundred thirty-five thousand, one hundred forty-four".