4728673281 has 4 divisors (see below), whose sum is σ = 6304897712. Its totient is φ = 3152448852.

The previous prime is 4728673253. The next prime is 4728673289. The reversal of 4728673281 is 1823768274.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4728673281 - 2⁵ = 4728673249 is a prime.

It is a super-2 number, since 2×4728673281² = 44720701996886609922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4728673281.

It is not an unprimeable number, because it can be changed into a prime (4728673289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 788112211 + ... + 788112216.

It is an arithmetic number, because the mean of its divisors is an integer number (1576224428).

Almost surely, 2^4728673281 is an apocalyptic number.

It is an amenable number.

4728673281 is a deficient number, since it is larger than the sum of its proper divisors (1576224431).

4728673281 is a wasteful number, since it uses less digits than its factorization.

4728673281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576224430.

The product of its digits is 903168, while the sum is 48.

The square root of 4728673281 is about 68765.3494210565. The cubic root of 4728673281 is about 1678.4681426915.

The spelling of 4728673281 in words is "four billion, seven hundred twenty-eight million, six hundred seventy-three thousand, two hundred eighty-one".