217013260 has 24 divisors (see below), whose sum is σ = 466328016. Its totient is φ = 84786240.

The previous prime is 217013249. The next prime is 217013261. The reversal of 217013260 is 62310712.

It is not an unprimeable number, because it can be changed into a prime (217013261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125311 + ... + 127030.

It is an arithmetic number, because the mean of its divisors is an integer number (19430334).

Almost surely, 2^217013260 is an apocalyptic number.

217013260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

217013260 is an abundant number, since it is smaller than the sum of its proper divisors (249314756).

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

217013260 is a wasteful number, since it uses less digits than its factorization.

217013260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252393 (or 252391 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 217013260 is about 14731.3699295076. The cubic root of 217013260 is about 600.9367404714.

Adding to 217013260 its reverse (62310712), we get a palindrome (279323972).

The spelling of 217013260 in words is "two hundred seventeen million, thirteen thousand, two hundred sixty".