216552884 has 12 divisors (see below), whose sum is σ = 379296708. Its totient is φ = 108182400.

The previous prime is 216552877. The next prime is 216552943. The reversal of 216552884 is 488255612.

It is a happy number.

216552884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 174821284 + 41731600 = 13222^2 + 6460^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18197 + ... + 27644.

It is an arithmetic number, because the mean of its divisors is an integer number (31608059).

Almost surely, 2^216552884 is an apocalyptic number.

It is an amenable number.

216552884 is a deficient number, since it is larger than the sum of its proper divisors (162743824).

216552884 is a wasteful number, since it uses less digits than its factorization.

216552884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47026 (or 47024 counting only the distinct ones).

The product of its digits is 153600, while the sum is 41.

The square root of 216552884 is about 14715.7359313084. The cubic root of 216552884 is about 600.5114934631.

It can be divided in two parts, 2165528 and 84, that added together give a palindrome (2165612).

The spelling of 216552884 in words is "two hundred sixteen million, five hundred fifty-two thousand, eight hundred eighty-four".