216881060 has 48 divisors (see below), whose sum is σ = 499105152. Its totient is φ = 78508800.

The previous prime is 216881059. The next prime is 216881069. The reversal of 216881060 is 60188612.

It is not an unprimeable number, because it can be changed into a prime (216881069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49145 + ... + 53375.

It is an arithmetic number, because the mean of its divisors is an integer number (10398024).

Almost surely, 2^216881060 is an apocalyptic number.

216881060 is a gapful number since it is divisible by the number (20) 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 216881060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249552576).

216881060 is an abundant number, since it is smaller than the sum of its proper divisors (282224092).

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

216881060 is a wasteful number, since it uses less digits than its factorization.

216881060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4484 (or 4482 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 216881060 is about 14726.8822226566. The cubic root of 216881060 is about 600.8146895971.

The spelling of 216881060 in words is "two hundred sixteen million, eight hundred eighty-one thousand, sixty".