216271608 has 64 divisors (see below), whose sum is σ = 621120000. Its totient is φ = 61471872.

The previous prime is 216271543. The next prime is 216271619. The reversal of 216271608 is 806172612.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 30198 + ... + 36666.

It is an arithmetic number, because the mean of its divisors is an integer number (9705000).

Almost surely, 2^216271608 is an apocalyptic number.

216271608 is a gapful number since it is divisible by the number (28) 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 216271608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310560000).

216271608 is an abundant number, since it is smaller than the sum of its proper divisors (404848392).

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

216271608 is a wasteful number, since it uses less digits than its factorization.

216271608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6684 (or 6680 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 216271608 is about 14706.1758455419. The cubic root of 216271608 is about 600.2513835514.

The spelling of 216271608 in words is "two hundred sixteen million, two hundred seventy-one thousand, six hundred eight".