7728448173 has 8 divisors (see below), whose sum is σ = 10479252000. Its totient is φ = 5064971568.

The previous prime is 7728448171. The next prime is 7728448283. The reversal of 7728448173 is 3718448277.

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

It is not a de Polignac number, because 7728448173 - 2¹ = 7728448171 is a prime.

It is a super-2 number, since 2×7728448173² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7728448171) 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, 21831598 + ... + 21831951.

It is an arithmetic number, because the mean of its divisors is an integer number (1309906500).

Almost surely, 2^7728448173 is an apocalyptic number.

It is an amenable number.

7728448173 is a deficient number, since it is larger than the sum of its proper divisors (2750803827).

7728448173 is a wasteful number, since it uses less digits than its factorization.

7728448173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43663611.

The product of its digits is 2107392, while the sum is 51.

The square root of 7728448173 is about 87911.5929385880. The cubic root of 7728448173 is about 1977.1096975894.

The spelling of 7728448173 in words is "seven billion, seven hundred twenty-eight million, four hundred forty-eight thousand, one hundred seventy-three".