4728273621 has 8 divisors (see below), whose sum is σ = 6304684704. Its totient is φ = 3152022480.

The previous prime is 4728273601. The next prime is 4728273637. The reversal of 4728273621 is 1263728274.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4728273621 - 2¹¹ = 4728271573 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4728273601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83311 + ... + 128051.

It is an arithmetic number, because the mean of its divisors is an integer number (788085588).

Almost surely, 2^4728273621 is an apocalyptic number.

It is an amenable number.

4728273621 is a deficient number, since it is larger than the sum of its proper divisors (1576411083).

4728273621 is a wasteful number, since it uses less digits than its factorization.

4728273621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79971.

The product of its digits is 225792, while the sum is 42.

The square root of 4728273621 is about 68762.4433902694. The cubic root of 4728273621 is about 1678.4208542000.

The spelling of 4728273621 in words is "four billion, seven hundred twenty-eight million, two hundred seventy-three thousand, six hundred twenty-one".