730188 has 24 divisors (see below), whose sum is σ = 1893360. Its totient is φ = 243360.

The previous prime is 730187. The next prime is 730199. The reversal of 730188 is 881037.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 730188.

It is not an unprimeable number, because it can be changed into a prime (730187) 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, 3273 + ... + 3488.

It is an arithmetic number, because the mean of its divisors is an integer number (78890).

2⁷³⁰¹⁸⁸ is an apocalyptic number.

It is an amenable number.

730188 is an abundant number, since it is smaller than the sum of its proper divisors (1163172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

730188 is a wasteful number, since it uses less digits than its factorization.

730188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6774 (or 6766 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 730188 is about 854.5103861276. The cubic root of 730188 is about 90.0488623560.

The spelling of 730188 in words is "seven hundred thirty thousand, one hundred eighty-eight".