731740726 has 8 divisors (see below), whose sum is σ = 1106254080. Its totient is φ = 362989368.

The previous prime is 731740721. The next prime is 731740729. The reversal of 731740726 is 627047137.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731740721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1440181 + ... + 1440688.

It is an arithmetic number, because the mean of its divisors is an integer number (138281760).

Almost surely, 2^731740726 is an apocalyptic number.

731740726 is a deficient number, since it is larger than the sum of its proper divisors (374513354).

731740726 is a wasteful number, since it uses less digits than its factorization.

731740726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880998.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 731740726 is about 27050.7065711785. The cubic root of 731740726 is about 901.1264602906.

The spelling of 731740726 in words is "seven hundred thirty-one million, seven hundred forty thousand, seven hundred twenty-six".