216757252 has 24 divisors (see below), whose sum is σ = 393220800. Its totient is φ = 104424096.

The previous prime is 216757243. The next prime is 216757253. The reversal of 216757252 is 252757612.

It is not an unprimeable number, because it can be changed into a prime (216757253) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 63649 + ... + 66967.

It is an arithmetic number, because the mean of its divisors is an integer number (16384200).

Almost surely, 2^216757252 is an apocalyptic number.

It is an amenable number.

216757252 is a deficient number, since it is larger than the sum of its proper divisors (176463548).

216757252 is a wasteful number, since it uses less digits than its factorization.

216757252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3915 (or 3913 counting only the distinct ones).

The product of its digits is 58800, while the sum is 37.

The square root of 216757252 is about 14722.6781531079. The cubic root of 216757252 is about 600.7003414776.

The spelling of 216757252 in words is "two hundred sixteen million, seven hundred fifty-seven thousand, two hundred fifty-two".