10298721 has 4 divisors (see below), whose sum is σ = 13731632. Its totient is φ = 6865812.

The previous prime is 10298693. The next prime is 10298737. The reversal of 10298721 is 12789201.

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 not a de Polignac number, because 10298721 - 2⁵ = 10298689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10298791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1716451 + ... + 1716456.

It is an arithmetic number, because the mean of its divisors is an integer number (3432908).

Almost surely, 2^10298721 is an apocalyptic number.

It is an amenable number.

10298721 is a deficient number, since it is larger than the sum of its proper divisors (3432911).

10298721 is an equidigital number, since it uses as much as digits as its factorization.

10298721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432910.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 10298721 is about 3209.1620401594. The cubic root of 10298721 is about 217.5677051738.

The spelling of 10298721 in words is "ten million, two hundred ninety-eight thousand, seven hundred twenty-one".