6731494728 has 64 divisors (see below), whose sum is σ = 19330565760. Its totient is φ = 1913511936.

The previous prime is 6731494717. The next prime is 6731494747. The reversal of 6731494728 is 8274941376.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68601 + ... + 134792.

It is an arithmetic number, because the mean of its divisors is an integer number (302040090).

Almost surely, 2^6731494728 is an apocalyptic number.

It is an amenable number.

6731494728 is an abundant number, since it is smaller than the sum of its proper divisors (12599071032).

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

6731494728 is a wasteful number, since it uses less digits than its factorization.

6731494728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203606 (or 203602 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 51.

The square root of 6731494728 is about 82045.6868336173. The cubic root of 6731494728 is about 1888.1529436870.

The spelling of 6731494728 in words is "six billion, seven hundred thirty-one million, four hundred ninety-four thousand, seven hundred twenty-eight".