726865880 has 64 divisors (see below), whose sum is σ = 1768586400. Its totient is φ = 267264000.

The previous prime is 726865877. The next prime is 726865913. The reversal of 726865880 is 88568627.

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, 127736 + ... + 133304.

Almost surely, 2^726865880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 726865880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (884293200).

726865880 is an abundant number, since it is smaller than the sum of its proper divisors (1041720520).

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

726865880 is a wasteful number, since it uses less digits than its factorization.

726865880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5844 (or 5840 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 50.

The square root of 726865880 is about 26960.4502929754. The cubic root of 726865880 is about 899.1209029168.

The spelling of 726865880 in words is "seven hundred twenty-six million, eight hundred sixty-five thousand, eight hundred eighty".