732030221 has 4 divisors (see below), whose sum is σ = 788340252. Its totient is φ = 675720192.

The previous prime is 732030199. The next prime is 732030253. The reversal of 732030221 is 122030237.

732030221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 506700100 + 225330121 = 22510^2 + 15011^2 .

It is a cyclic number.

It is not a de Polignac number, because 732030221 - 2¹⁴ = 732013837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 732030193 and 732030202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (732039221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28154996 + ... + 28155021.

It is an arithmetic number, because the mean of its divisors is an integer number (197085063).

Almost surely, 2^732030221 is an apocalyptic number.

It is an amenable number.

732030221 is a deficient number, since it is larger than the sum of its proper divisors (56310031).

732030221 is a wasteful number, since it uses less digits than its factorization.

732030221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56310030.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 732030221 is about 27056.0570113237. The cubic root of 732030221 is about 901.2452807054.

Adding to 732030221 its reverse (122030237), we get a palindrome (854060458).

The spelling of 732030221 in words is "seven hundred thirty-two million, thirty thousand, two hundred twenty-one".