7728740474287 has 8 divisors (see below), whose sum is σ = 8871417639200. Its totient is φ = 6595706155104.

The previous prime is 7728740474249. The next prime is 7728740474297. The reversal of 7728740474287 is 7824740478277.

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

It is a cyclic number.

It is not a de Polignac number, because 7728740474287 - 2¹⁵ = 7728740441519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7728740474297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2410709712 + ... + 2410712917.

It is an arithmetic number, because the mean of its divisors is an integer number (1108927204900).

Almost surely, 2^{7728740474287} is an apocalyptic number.

7728740474287 is a deficient number, since it is larger than the sum of its proper divisors (1142677164913).

7728740474287 is a wasteful number, since it uses less digits than its factorization.

7728740474287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4821422865.

The product of its (nonzero) digits is 275365888, while the sum is 67.

The spelling of 7728740474287 in words is "seven trillion, seven hundred twenty-eight billion, seven hundred forty million, four hundred seventy-four thousand, two hundred eighty-seven".