217016272 has 20 divisors (see below), whose sum is σ = 458693856. Its totient is φ = 98643680.

The previous prime is 217016269. The next prime is 217016273. The reversal of 217016272 is 272610712.

It is a self number, because there is not a number n which added to its sum of digits gives 217016272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217016273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 616348 + ... + 616699.

Almost surely, 2^217016272 is an apocalyptic number.

217016272 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

217016272 is an abundant number, since it is smaller than the sum of its proper divisors (241677584).

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

217016272 is a wasteful number, since it uses less digits than its factorization.

217016272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233066 (or 1233060 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 217016272 is about 14731.4721599710. The cubic root of 217016272 is about 600.9395206596.

Adding to 217016272 its reverse (272610712), we get a palindrome (489626984).

The spelling of 217016272 in words is "two hundred seventeen million, sixteen thousand, two hundred seventy-two".