308867240 has 64 divisors (see below), whose sum is σ = 760743360. Its totient is φ = 111928320.

The previous prime is 308867213. The next prime is 308867243. The reversal of 308867240 is 42768803.

308867240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 308867194 and 308867203.

It is not an unprimeable number, because it can be changed into a prime (308867243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147239 + ... + 149321.

It is an arithmetic number, because the mean of its divisors is an integer number (11886615).

Almost surely, 2^308867240 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 308867240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (380371680).

308867240 is an abundant number, since it is smaller than the sum of its proper divisors (451876120).

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

308867240 is a wasteful number, since it uses less digits than its factorization.

308867240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2442 (or 2438 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 308867240 is about 17574.6191992885. The cubic root of 308867240 is about 675.9645943900.

The spelling of 308867240 in words is "three hundred eight million, eight hundred sixty-seven thousand, two hundred forty".