726631730 has 32 divisors (see below), whose sum is σ = 1444919040. Its totient is φ = 260881920.

The previous prime is 726631729. The next prime is 726631739. The reversal of 726631730 is 37136627.

It is a happy number.

726631730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (726631739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33119 + ... + 50498.

It is an arithmetic number, because the mean of its divisors is an integer number (45153720).

Almost surely, 2^726631730 is an apocalyptic number.

726631730 is a deficient number, since it is larger than the sum of its proper divisors (718287310).

726631730 is a wasteful number, since it uses less digits than its factorization.

726631730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83714.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 726631730 is about 26956.1074712207. The cubic root of 726631730 is about 899.0243460069.

The spelling of 726631730 in words is "seven hundred twenty-six million, six hundred thirty-one thousand, seven hundred thirty".