4728212644 has 9 divisors (see below), whose sum is σ = 8274612801. Its totient is φ = 2364037560.

The previous prime is 4728212641. The next prime is 4728212653. The reversal of 4728212644 is 4462128274.

The square root of 4728212644 is 68762.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 451052644 + 4277160000 = 21238^2 + 65400^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4728212597 and 4728212606.

It is not an unprimeable number, because it can be changed into a prime (4728212641) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 120334 + ... + 154714.

Almost surely, 2^4728212644 is an apocalyptic number.

4728212644 is the 68762-nd square number.

It is an amenable number.

4728212644 is a deficient number, since it is larger than the sum of its proper divisors (3546400157).

4728212644 is an frugal number, since it uses more digits than its factorization.

4728212644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68766 (or 34383 counting only the distinct ones).

The product of its digits is 172032, while the sum is 40.

The cubic root of 4728212644 is about 1678.4136390572.

The spelling of 4728212644 in words is "four billion, seven hundred twenty-eight million, two hundred twelve thousand, six hundred forty-four".