308018808 has 64 divisors (see below), whose sum is σ = 860832000. Its totient is φ = 102046176.

The previous prime is 308018807. The next prime is 308018819. The reversal of 308018808 is 808810803.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308018807) 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, 31803 + ... + 40341.

It is an arithmetic number, because the mean of its divisors is an integer number (13450500).

Almost surely, 2^308018808 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 308018808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (430416000).

308018808 is an abundant number, since it is smaller than the sum of its proper divisors (552813192).

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

308018808 is a wasteful number, since it uses less digits than its factorization.

308018808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8721 (or 8711 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 308018808 is about 17550.4646092347. The cubic root of 308018808 is about 675.3450877444.

The spelling of 308018808 in words is "three hundred eight million, eighteen thousand, eight hundred eight".