728766582407 has 4 divisors (see below), whose sum is σ = 741118558440. Its totient is φ = 716414606376.

The previous prime is 728766582389. The next prime is 728766582419. The reversal of 728766582407 is 704285667827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 704285667827 = 7 ⋅100612238261.

It is a cyclic number.

It is not a de Polignac number, because 728766582407 - 2⁶ = 728766582343 is a prime.

It is a super-2 number, since 2×728766582407² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 728766582407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728766782407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6175987928 + ... + 6175988045.

It is an arithmetic number, because the mean of its divisors is an integer number (185279639610).

Almost surely, 2^728766582407 is an apocalyptic number.

728766582407 is a deficient number, since it is larger than the sum of its proper divisors (12351976033).

728766582407 is a wasteful number, since it uses less digits than its factorization.

728766582407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12351976032.

The product of its (nonzero) digits is 63221760, while the sum is 62.

The spelling of 728766582407 in words is "seven hundred twenty-eight billion, seven hundred sixty-six million, five hundred eighty-two thousand, four hundred seven".