217256060 has 96 divisors (see below), whose sum is σ = 544223232. Its totient is φ = 71285760.

The previous prime is 217256021. The next prime is 217256071. The reversal of 217256060 is 60652712.

217256060 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 490199 + ... + 490641.

It is an arithmetic number, because the mean of its divisors is an integer number (5668992).

Almost surely, 2^217256060 is an apocalyptic number.

217256060 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 217256060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272111616).

217256060 is an abundant number, since it is smaller than the sum of its proper divisors (326967172).

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

217256060 is a wasteful number, since it uses less digits than its factorization.

217256060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603 (or 601 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 217256060 is about 14739.6085429702. The cubic root of 217256060 is about 601.1607714199.

The spelling of 217256060 in words is "two hundred seventeen million, two hundred fifty-six thousand, sixty".