216036756 has 54 divisors (see below), whose sum is σ = 591348030. Its totient is φ = 66470976.

The previous prime is 216036683. The next prime is 216036761. The reversal of 216036756 is 657630612.

It can be written as a sum of positive squares in 3 ways, for example, as 11088900 + 204947856 = 3330^2 + 14316^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 216036756.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11671 + ... + 23838.

Almost surely, 2^216036756 is an apocalyptic number.

216036756 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

216036756 is an abundant number, since it is smaller than the sum of its proper divisors (375311274).

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

216036756 is a wasteful number, since it uses less digits than its factorization.

216036756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35545 (or 35527 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 216036756 is about 14698.1888680204. The cubic root of 216036756 is about 600.0340314031.

The spelling of 216036756 in words is "two hundred sixteen million, thirty-six thousand, seven hundred fifty-six".