308423808 has 512 divisors, whose sum is σ = 1214208000. Its totient is φ = 74649600.

The previous prime is 308423807. The next prime is 308423837. The reversal of 308423808 is 808324803.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (308423803) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5056098 + ... + 5056158.

It is an arithmetic number, because the mean of its divisors is an integer number (2371500).

Almost surely, 2^308423808 is an apocalyptic number.

308423808 is a gapful number since it is divisible by the number (38) 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 308423808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (607104000).

308423808 is an abundant number, since it is smaller than the sum of its proper divisors (905784192).

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

308423808 is a wasteful number, since it uses less digits than its factorization.

308423808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 308423808 is about 17561.9989750598. The cubic root of 308423808 is about 675.6409516804.

Adding to 308423808 its sum of digits (36), we get a square (308423844 = 17562²).

The spelling of 308423808 in words is "three hundred eight million, four hundred twenty-three thousand, eight hundred eight".