728740536532 has 48 divisors (see below), whose sum is σ = 1304815925952. Its totient is φ = 355995993600.

The previous prime is 728740536421. The next prime is 728740536541. The reversal of 728740536532 is 235635047827.

It is a self number, because there is not a number n which added to its sum of digits gives 728740536532.

It is a congruent number.

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, 78161223 + ... + 78170545.

It is an arithmetic number, because the mean of its divisors is an integer number (27183665124).

Almost surely, 2^728740536532 is an apocalyptic number.

It is an amenable number.

728740536532 is a deficient number, since it is larger than the sum of its proper divisors (576075389420).

728740536532 is a wasteful number, since it uses less digits than its factorization.

728740536532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10888 (or 10886 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 52.

The spelling of 728740536532 in words is "seven hundred twenty-eight billion, seven hundred forty million, five hundred thirty-six thousand, five hundred thirty-two".