10348721 has 4 divisors (see below), whose sum is σ = 10364772. Its totient is φ = 10332672.

The previous prime is 10348717. The next prime is 10348729. The reversal of 10348721 is 12784301.

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 8065600 + 2283121 = 2840^2 + 1511^2 .

It is a cyclic number.

It is not a de Polignac number, because 10348721 - 2² = 10348717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10348729) 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 3 ways as a sum of consecutive naturals, for example, 7016 + ... + 8361.

It is an arithmetic number, because the mean of its divisors is an integer number (2591193).

Almost surely, 2^10348721 is an apocalyptic number.

It is an amenable number.

10348721 is a deficient number, since it is larger than the sum of its proper divisors (16051).

10348721 is an equidigital number, since it uses as much as digits as its factorization.

10348721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16050.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 10348721 is about 3216.9428033461. The cubic root of 10348721 is about 217.9192319261.

The spelling of 10348721 in words is "ten million, three hundred forty-eight thousand, seven hundred twenty-one".