730726043 has 4 divisors (see below), whose sum is σ = 731806080. Its totient is φ = 729646008.

The previous prime is 730726039. The next prime is 730726049. The reversal of 730726043 is 340627037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340627037 = 43 ⋅7921559.

It is a cyclic number.

It is not a de Polignac number, because 730726043 - 2² = 730726039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (730726049) 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, 539003 + ... + 540356.

It is an arithmetic number, because the mean of its divisors is an integer number (182951520).

Almost surely, 2^730726043 is an apocalyptic number.

730726043 is a deficient number, since it is larger than the sum of its proper divisors (1080037).

730726043 is a wasteful number, since it uses less digits than its factorization.

730726043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080036.

The product of its (nonzero) digits is 21168, while the sum is 32.

The square root of 730726043 is about 27031.9448615892. The cubic root of 730726043 is about 900.7097459039.

The spelling of 730726043 in words is "seven hundred thirty million, seven hundred twenty-six thousand, forty-three".