726280728 has 16 divisors (see below), whose sum is σ = 1815701880. Its totient is φ = 242093568.

The previous prime is 726280661. The next prime is 726280739. The reversal of 726280728 is 827082627.

It is a self number, because there is not a number n which added to its sum of digits gives 726280728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15130825 + ... + 15130872.

Almost surely, 2^726280728 is an apocalyptic number.

It is an amenable number.

726280728 is an abundant number, since it is smaller than the sum of its proper divisors (1089421152).

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

726280728 is a wasteful number, since it uses less digits than its factorization.

726280728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30261706 (or 30261702 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 726280728 is about 26949.5960637632. The cubic root of 726280728 is about 898.8795637397.

It can be divided in two parts, 7262 and 80728, that added together give a triangular number (87990 = T₄₁₉).

The spelling of 726280728 in words is "seven hundred twenty-six million, two hundred eighty thousand, seven hundred twenty-eight".