4081688272 has 30 divisors (see below), whose sum is σ = 7939072658. Its totient is φ = 2032911552.

The previous prime is 4081688267. The next prime is 4081688327. The reversal of 4081688272 is 2728861804.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3545487936 + 536200336 = 59544^2 + 23156^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 4935123 + ... + 4935949.

Almost surely, 2^4081688272 is an apocalyptic number.

It is an amenable number.

4081688272 is a deficient number, since it is larger than the sum of its proper divisors (3857384386).

4081688272 is an frugal number, since it uses more digits than its factorization.

4081688272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2035 (or 1202 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 46.

The square root of 4081688272 is about 63888.0917855589. The cubic root of 4081688272 is about 1598.1343191174.

The spelling of 4081688272 in words is "four billion, eighty-one million, six hundred eighty-eight thousand, two hundred seventy-two".