308140272 has 120 divisors (see below), whose sum is σ = 961009920. Its totient is φ = 91367040.

The previous prime is 308140247. The next prime is 308140291. The reversal of 308140272 is 272041803.

308140272 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72379 + ... + 76517.

It is an arithmetic number, because the mean of its divisors is an integer number (8008416).

Almost surely, 2^308140272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 308140272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480504960).

308140272 is an abundant number, since it is smaller than the sum of its proper divisors (652869648).

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

308140272 is a wasteful number, since it uses less digits than its factorization.

308140272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4211 (or 4202 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 308140272 is about 17553.9246893679. The cubic root of 308140272 is about 675.4338478389.

The spelling of 308140272 in words is "three hundred eight million, one hundred forty thousand, two hundred seventy-two".