730232221 has 4 divisors (see below), whose sum is σ = 761981472. Its totient is φ = 698482972.

The previous prime is 730232219. The next prime is 730232233. The reversal of 730232221 is 122232037.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 730232221 - 2¹ = 730232219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 730232192 and 730232201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730232201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15874591 + ... + 15874636.

It is an arithmetic number, because the mean of its divisors is an integer number (190495368).

Almost surely, 2^730232221 is an apocalyptic number.

It is an amenable number.

730232221 is a deficient number, since it is larger than the sum of its proper divisors (31749251).

730232221 is a wasteful number, since it uses less digits than its factorization.

730232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31749250.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 730232221 is about 27022.8092729087. The cubic root of 730232221 is about 900.5068013914.

Adding to 730232221 its reverse (122232037), we get a palindrome (852464258).

The spelling of 730232221 in words is "seven hundred thirty million, two hundred thirty-two thousand, two hundred twenty-one".