308142912 has 224 divisors, whose sum is σ = 1070945280. Its totient is φ = 75755520.

The previous prime is 308142881. The next prime is 308142941. The reversal of 308142912 is 219241803.

It is a tau number, because it is divible by the number of its divisors (224).

It is a self number, because there is not a number n which added to its sum of digits gives 308142912.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 280348 + ... + 281444.

Almost surely, 2^308142912 is an apocalyptic number.

308142912 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 308142912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (535472640).

308142912 is an abundant number, since it is smaller than the sum of its proper divisors (762802368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

308142912 is a wasteful number, since it uses less digits than its factorization.

308142912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149 (or 1139 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 308142912 is about 17553.9998860659. Note that the first 3 decimals coincide. The cubic root of 308142912 is about 675.4357767659.

The spelling of 308142912 in words is "three hundred eight million, one hundred forty-two thousand, nine hundred twelve".