730000173 has 8 divisors (see below), whose sum is σ = 1112381248. Its totient is φ = 417142944.

The previous prime is 730000171. The next prime is 730000181. The reversal of 730000173 is 371000037.

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

It is not a de Polignac number, because 730000173 - 2¹ = 730000171 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 34761913 = 730000173 / (7 + 3 + 0 + 0 + 0 + 0 + 1 + 7 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730000171) 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, 17380936 + ... + 17380977.

It is an arithmetic number, because the mean of its divisors is an integer number (139047656).

Almost surely, 2^730000173 is an apocalyptic number.

It is an amenable number.

730000173 is a deficient number, since it is larger than the sum of its proper divisors (382381075).

730000173 is a wasteful number, since it uses less digits than its factorization.

730000173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34761923.

The product of its (nonzero) digits is 441, while the sum is 21.

The square root of 730000173 is about 27018.5153737210. The cubic root of 730000173 is about 900.4114057377.

The spelling of 730000173 in words is "seven hundred thirty million, one hundred seventy-three", and thus it is an aban number.