308230740 has 144 divisors (see below), whose sum is σ = 996323328. Its totient is φ = 76864512.

The previous prime is 308230739. The next prime is 308230759. The reversal of 308230740 is 47032803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 804589 + ... + 804971.

It is an arithmetic number, because the mean of its divisors is an integer number (6918912).

Almost surely, 2^308230740 is an apocalyptic number.

308230740 is a gapful number since it is divisible by the number (30) 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 308230740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (498161664).

308230740 is an abundant number, since it is smaller than the sum of its proper divisors (688092588).

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

308230740 is a wasteful number, since it uses less digits than its factorization.

308230740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 308230740 is about 17556.5013598951. The cubic root of 308230740 is about 675.4999423808.

The spelling of 308230740 in words is "three hundred eight million, two hundred thirty thousand, seven hundred forty".