726242538 has 16 divisors (see below), whose sum is σ = 1659983040. Its totient is φ = 207497856.

The previous prime is 726242537. The next prime is 726242557. The reversal of 726242538 is 835242627.

726242538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 726242496 and 726242505.

It is not an unprimeable number, because it can be changed into a prime (726242537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8645703 + ... + 8645786.

It is an arithmetic number, because the mean of its divisors is an integer number (103748940).

Almost surely, 2^726242538 is an apocalyptic number.

726242538 is an abundant number, since it is smaller than the sum of its proper divisors (933740502).

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

726242538 is a wasteful number, since it uses less digits than its factorization.

726242538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17291501.

The product of its digits is 161280, while the sum is 39.

The square root of 726242538 is about 26948.8875095058. The cubic root of 726242538 is about 898.8638082103.

The spelling of 726242538 in words is "seven hundred twenty-six million, two hundred forty-two thousand, five hundred thirty-eight".