216772012 has 24 divisors (see below), whose sum is σ = 383846400. Its totient is φ = 107109840.

The previous prime is 216771991. The next prime is 216772019. The reversal of 216772012 is 210277612.

It is not an unprimeable number, because it can be changed into a prime (216772019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126739 + ... + 128437.

It is an arithmetic number, because the mean of its divisors is an integer number (15993600).

Almost surely, 2^216772012 is an apocalyptic number.

It is an amenable number.

216772012 is a deficient number, since it is larger than the sum of its proper divisors (167074388).

216772012 is a wasteful number, since it uses less digits than its factorization.

216772012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061 (or 2059 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 216772012 is about 14723.1794120699. The cubic root of 216772012 is about 600.7139759861.

The spelling of 216772012 in words is "two hundred sixteen million, seven hundred seventy-two thousand, twelve".