216017272 has 8 divisors (see below), whose sum is σ = 405032400. Its totient is φ = 108008632.

The previous prime is 216017257. The next prime is 216017273. The reversal of 216017272 is 272710612.

216017272 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 216017272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216017273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13501072 + ... + 13501087.

It is an arithmetic number, because the mean of its divisors is an integer number (50629050).

Almost surely, 2^216017272 is an apocalyptic number.

It is an amenable number.

216017272 is a deficient number, since it is larger than the sum of its proper divisors (189015128).

216017272 is a wasteful number, since it uses less digits than its factorization.

216017272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27002165 (or 27002161 counting only the distinct ones).

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

The square root of 216017272 is about 14697.5260503256. The cubic root of 216017272 is about 600.0159921663.

Adding to 216017272 its reverse (272710612), we get a palindrome (488727884).

The spelling of 216017272 in words is "two hundred sixteen million, seventeen thousand, two hundred seventy-two".