216652928 has 24 divisors (see below), whose sum is σ = 431945265. Its totient is φ = 108243200.

The previous prime is 216652927. The next prime is 216652937. The reversal of 216652928 is 829256612.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 116812864 + 99840064 = 10808^2 + 9992^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=10408.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216652927) 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 2 ways as a sum of consecutive naturals, for example, 165878 + ... + 167178.

Almost surely, 2^216652928 is an apocalyptic number.

It is an amenable number.

216652928 is a deficient number, since it is larger than the sum of its proper divisors (215292337).

216652928 is an frugal number, since it uses more digits than its factorization.

216652928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616 (or 1303 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 216652928 is about 14719.1347571792. The cubic root of 216652928 is about 600.6039548233.

The spelling of 216652928 in words is "two hundred sixteen million, six hundred fifty-two thousand, nine hundred twenty-eight".