308815056 has 240 divisors, whose sum is σ = 1027553280. Its totient is φ = 85536000.

The previous prime is 308815019. The next prime is 308815063. The reversal of 308815056 is 650518803.

308815056 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 308815056.

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, 932811 + ... + 933141.

It is an arithmetic number, because the mean of its divisors is an integer number (4281472).

Almost surely, 2^308815056 is an apocalyptic number.

308815056 is a gapful number since it is divisible by the number (36) 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 308815056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513776640).

308815056 is an abundant number, since it is smaller than the sum of its proper divisors (718738224).

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

308815056 is a wasteful number, since it uses less digits than its factorization.

308815056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 308815056 is about 17573.1344955873. The cubic root of 308815056 is about 675.9265235312.

It can be divided in two parts, 30881 and 5056, that added together give a cube (35937 = 33³).

The spelling of 308815056 in words is "three hundred eight million, eight hundred fifteen thousand, fifty-six".