212728296 has 32 divisors (see below), whose sum is σ = 580168800. Its totient is φ = 64463040.

The previous prime is 212728291. The next prime is 212728297. The reversal of 212728296 is 692827212.

It is not an unprimeable number, because it can be changed into a prime (212728291) 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, 402631 + ... + 403158.

It is an arithmetic number, because the mean of its divisors is an integer number (18130275).

Almost surely, 2^212728296 is an apocalyptic number.

It is an amenable number.

212728296 is an abundant number, since it is smaller than the sum of its proper divisors (367440504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212728296 is a wasteful number, since it uses less digits than its factorization.

212728296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805809 (or 805805 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 212728296 is about 14585.2081233008. The cubic root of 212728296 is about 596.9552194329.

The spelling of 212728296 in words is "two hundred twelve million, seven hundred twenty-eight thousand, two hundred ninety-six".