726335730 has 24 divisors (see below), whose sum is σ = 1888473132. Its totient is φ = 193689504.

The previous prime is 726335719. The next prime is 726335737. The reversal of 726335730 is 37533627.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 720761409 + 5574321 = 26847^2 + 2361^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (726335737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4035109 + ... + 4035288.

Almost surely, 2^726335730 is an apocalyptic number.

726335730 is an abundant number, since it is smaller than the sum of its proper divisors (1162137402).

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

726335730 is a wasteful number, since it uses less digits than its factorization.

726335730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8070410 (or 8070407 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 36.

The square root of 726335730 is about 26950.6165050078. The cubic root of 726335730 is about 898.9022541971.

The spelling of 726335730 in words is "seven hundred twenty-six million, three hundred thirty-five thousand, seven hundred thirty".