730191 has 32 divisors (see below), whose sum is σ = 1267200. Its totient is φ = 362880.

The previous prime is 730187. The next prime is 730199. The reversal of 730191 is 191037.

730191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 730191 - 2² = 730187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730199) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6645 + ... + 6753.

It is an arithmetic number, because the mean of its divisors is an integer number (39600).

2⁷³⁰¹⁹¹ is an apocalyptic number.

730191 is a deficient number, since it is larger than the sum of its proper divisors (537009).

730191 is a wasteful number, since it uses less digits than its factorization.

730191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159.

The product of its (nonzero) digits is 189, while the sum is 21.

The square root of 730191 is about 854.5121415170. The cubic root of 730191 is about 90.0489856787.

The spelling of 730191 in words is "seven hundred thirty thousand, one hundred ninety-one".