10730221 has 8 divisors (see below), whose sum is σ = 10999800. Its totient is φ = 10463232.

The previous prime is 10730219. The next prime is 10730227. The reversal of 10730221 is 12203701.

It is a happy number.

10730221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3515625 + 7214596 = 1875^2 + 2686^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 10730221 - 2¹ = 10730219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10730195 and 10730204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10730227) 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, 9705 + ... + 10753.

It is an arithmetic number, because the mean of its divisors is an integer number (1374975).

Almost surely, 2^10730221 is an apocalyptic number.

It is an amenable number.

10730221 is a deficient number, since it is larger than the sum of its proper divisors (269579).

10730221 is a wasteful number, since it uses less digits than its factorization.

10730221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 10730221 is about 3275.7016042369. The cubic root of 10730221 is about 220.5648090476.

Adding to 10730221 its reverse (12203701), we get a palindrome (22933922).

The spelling of 10730221 in words is "ten million, seven hundred thirty thousand, two hundred twenty-one".