308433216 has 224 divisors, whose sum is σ = 1019576320. Its totient is φ = 80123904.

The previous prime is 308433211. The next prime is 308433217. The reversal of 308433216 is 612334803.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308433211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2218875 + ... + 2219013.

It is an arithmetic number, because the mean of its divisors is an integer number (4551680).

Almost surely, 2^308433216 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 308433216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (509788160).

308433216 is an abundant number, since it is smaller than the sum of its proper divisors (711143104).

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

308433216 is a wasteful number, since it uses less digits than its factorization.

308433216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 308433216 is about 17562.2668240748. The cubic root of 308433216 is about 675.6478214110.

The spelling of 308433216 in words is "three hundred eight million, four hundred thirty-three thousand, two hundred sixteen".