730000073 has 8 divisors (see below), whose sum is σ = 807273696. Its totient is φ = 654544800.

The previous prime is 730000069. The next prime is 730000079. The reversal of 730000073 is 370000037.

730000073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 730000073 - 2² = 730000069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (730000079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453743 + ... + 455348.

It is an arithmetic number, because the mean of its divisors is an integer number (100909212).

Almost surely, 2^730000073 is an apocalyptic number.

730000073 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

730000073 is a deficient number, since it is larger than the sum of its proper divisors (77273623).

730000073 is a wasteful number, since it uses less digits than its factorization.

730000073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909175.

The product of its (nonzero) digits is 441, while the sum is 20.

The square root of 730000073 is about 27018.5135231382. The cubic root of 730000073 is about 900.4113646231.

The spelling of 730000073 in words is "seven hundred thirty million, seventy-three", and thus it is an aban number.