215266116 has 72 divisors (see below), whose sum is σ = 547858080. Its totient is φ = 65754624.

The previous prime is 215266099. The next prime is 215266151. The reversal of 215266116 is 611662512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 362716 + ... + 363308.

It is an arithmetic number, because the mean of its divisors is an integer number (7609140).

Almost surely, 2^215266116 is an apocalyptic number.

215266116 is a gapful number since it is divisible by the number (26) 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 215266116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273929040).

215266116 is an abundant number, since it is smaller than the sum of its proper divisors (332591964).

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

215266116 is a wasteful number, since it uses less digits than its factorization.

215266116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805 (or 790 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 215266116 is about 14671.9499726519. The cubic root of 215266116 is about 599.3197067378.

The spelling of 215266116 in words is "two hundred fifteen million, two hundred sixty-six thousand, one hundred sixteen".