308609340 has 96 divisors (see below), whose sum is σ = 960669696. Its totient is φ = 73509120.

The previous prime is 308609311. The next prime is 308609359. The reversal of 308609340 is 43906803.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 17799 + ... + 30561.

It is an arithmetic number, because the mean of its divisors is an integer number (10006976).

Almost surely, 2^308609340 is an apocalyptic number.

308609340 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 308609340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480334848).

308609340 is an abundant number, since it is smaller than the sum of its proper divisors (652060356).

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

308609340 is a wasteful number, since it uses less digits than its factorization.

308609340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12819 (or 12817 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 308609340 is about 17567.2803814364. The cubic root of 308609340 is about 675.7764015461.

The spelling of 308609340 in words is "three hundred eight million, six hundred nine thousand, three hundred forty".