308120168 has 8 divisors (see below), whose sum is σ = 577725330. Its totient is φ = 154060080.

The previous prime is 308120147. The next prime is 308120173. The reversal of 308120168 is 861021803.

It can be written as a sum of positive squares in only one way, i.e., 159719044 + 148401124 = 12638^2 + 12182^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 308120168.

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 as a sum of consecutive naturals, namely, 19257503 + ... + 19257518.

Almost surely, 2^308120168 is an apocalyptic number.

It is an amenable number.

308120168 is a deficient number, since it is larger than the sum of its proper divisors (269605162).

308120168 is a wasteful number, since it uses less digits than its factorization.

308120168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38515027 (or 38515023 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 308120168 is about 17553.3520445526. The cubic root of 308120168 is about 675.4191584062.

The spelling of 308120168 in words is "three hundred eight million, one hundred twenty thousand, one hundred sixty-eight".