538730726 has 4 divisors (see below), whose sum is σ = 808096092. Its totient is φ = 269365362.

The previous prime is 538730723. The next prime is 538730737. The reversal of 538730726 is 627037835.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538730723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134682680 + ... + 134682683.

It is an arithmetic number, because the mean of its divisors is an integer number (202024023).

Almost surely, 2^538730726 is an apocalyptic number.

538730726 is a deficient number, since it is larger than the sum of its proper divisors (269365366).

538730726 is a wasteful number, since it uses less digits than its factorization.

538730726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269365365.

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 538730726 is about 23210.5735818829. The cubic root of 538730726 is about 813.6867585584.

The spelling of 538730726 in words is "five hundred thirty-eight million, seven hundred thirty thousand, seven hundred twenty-six".