4721628168 has 24 divisors (see below), whose sum is σ = 12787743150. Its totient is φ = 1573876032.

The previous prime is 4721628151. The next prime is 4721628173. The reversal of 4721628168 is 8618261274.

4721628168 is a `hidden beast` number, since 4 + 7 + 2 + 1 + 628 + 16 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3336448644 + 1385179524 = 57762^2 + 37218^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 32789013 + ... + 32789156.

Almost surely, 2^4721628168 is an apocalyptic number.

It is an amenable number.

4721628168 is an abundant number, since it is smaller than the sum of its proper divisors (8066114982).

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

4721628168 is a wasteful number, since it uses less digits than its factorization.

4721628168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65578181 (or 65578174 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 4721628168 is about 68714.1045783178. The cubic root of 4721628168 is about 1677.6341613984.

The spelling of 4721628168 in words is "four billion, seven hundred twenty-one million, six hundred twenty-eight thousand, one hundred sixty-eight".