10090721 has 8 divisors (see below), whose sum is σ = 10589184. Its totient is φ = 9597280.

The previous prime is 10090709. The next prime is 10090739. The reversal of 10090721 is 12709001.

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 10090721 - 2¹⁰ = 10089697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10090693 and 10090702.

It is not an unprimeable number, because it can be changed into a prime (10090771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3245 + ... + 5541.

It is an arithmetic number, because the mean of its divisors is an integer number (1323648).

Almost surely, 2^10090721 is an apocalyptic number.

It is an amenable number.

10090721 is a deficient number, since it is larger than the sum of its proper divisors (498463).

10090721 is a wasteful number, since it uses less digits than its factorization.

10090721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 10090721 is about 3176.5895233725. The cubic root of 10090721 is about 216.0930169225.

Adding to 10090721 its reverse (12709001), we get a palindrome (22799722).

The spelling of 10090721 in words is "ten million, ninety thousand, seven hundred twenty-one".