728627486787 has 12 divisors (see below), whose sum is σ = 1086412310464. Its totient is φ = 470082249360.

The previous prime is 728627486771. The next prime is 728627486791. The reversal of 728627486787 is 787684726827.

728627486787 is a `hidden beast` number, since 7 + 2 + 8 + 62 + 7 + 486 + 7 + 87 = 666.

It is not a de Polignac number, because 728627486787 - 2⁴ = 728627486771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728627486087) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1305783748 + ... + 1305784305.

Almost surely, 2^728627486787 is an apocalyptic number.

728627486787 is a deficient number, since it is larger than the sum of its proper divisors (357784823677).

728627486787 is a wasteful number, since it uses less digits than its factorization.

728627486787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611568090 (or 2611568087 counting only the distinct ones).

The product of its digits is 708083712, while the sum is 72.

The spelling of 728627486787 in words is "seven hundred twenty-eight billion, six hundred twenty-seven million, four hundred eighty-six thousand, seven hundred eighty-seven".