216572296 has 8 divisors (see below), whose sum is σ = 406073070. Its totient is φ = 108286144.

The previous prime is 216572281. The next prime is 216572327. The reversal of 216572296 is 692275612.

It can be written as a sum of positive squares in only one way, i.e., 174504100 + 42068196 = 13210^2 + 6486^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13535761 + ... + 13535776.

Almost surely, 2^216572296 is an apocalyptic number.

It is an amenable number.

216572296 is a deficient number, since it is larger than the sum of its proper divisors (189500774).

216572296 is a wasteful number, since it uses less digits than its factorization.

216572296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27071543 (or 27071539 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 216572296 is about 14716.3954825902. The cubic root of 216572296 is about 600.5294363948.

The spelling of 216572296 in words is "two hundred sixteen million, five hundred seventy-two thousand, two hundred ninety-six".