216748432 has 10 divisors (see below), whose sum is σ = 419950118. Its totient is φ = 108374208.

The previous prime is 216748397. The next prime is 216748439. The reversal of 216748432 is 234847612.

216748432 is nontrivially palindromic in base 7.

It can be written as a sum of positive squares in only one way, i.e., 206094736 + 10653696 = 14356^2 + 3264^2 .

It is a junction number, because it is equal to n+sod(n) for n = 216748391 and 216748400.

It is not an unprimeable number, because it can be changed into a prime (216748439) 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 as a sum of consecutive naturals, namely, 6773373 + ... + 6773404.

Almost surely, 2^216748432 is an apocalyptic number.

It is an amenable number.

216748432 is a deficient number, since it is larger than the sum of its proper divisors (203201686).

216748432 is a wasteful number, since it uses less digits than its factorization.

216748432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13546785 (or 13546779 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 216748432 is about 14722.3786121673. The cubic root of 216748432 is about 600.6921937319.

The spelling of 216748432 in words is "two hundred sixteen million, seven hundred forty-eight thousand, four hundred thirty-two".