308916216 has 48 divisors (see below), whose sum is σ = 956170800. Its totient is φ = 88261632.

The previous prime is 308916203. The next prime is 308916221. The reversal of 308916216 is 612619803.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 305961 + ... + 306968.

It is an arithmetic number, because the mean of its divisors is an integer number (19920225).

Almost surely, 2^308916216 is an apocalyptic number.

308916216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

308916216 is an abundant number, since it is smaller than the sum of its proper divisors (647254584).

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

308916216 is a wasteful number, since it uses less digits than its factorization.

308916216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612948 (or 612941 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 308916216 is about 17576.0125170643. The cubic root of 308916216 is about 676.0003209503. Note that the first 3 decimals are identical.

The spelling of 308916216 in words is "three hundred eight million, nine hundred sixteen thousand, two hundred sixteen".